Tony,
Yes, Two Rock and several other companies will sell you a $10,000 amp chock full of vintage parts - Just as many companies offer "premium" versions of their products to sell to people who, regardless of talent level prefer to spend money on the finer things in life
Yes I have played a few Dumble amps. And i was fortunate enough to have an opportunity to spend a little time checking out Keith Urban's Dumble's when they were at SIR awhile back for rehearsal. And in fact one of them didn't sound so great. Ask Jelle. Some of Dumble's voicings for particular players subjectively didn't sound all that great to my ears. Also I've had the good fortune of working with Bonnie Raitt and got to check out I guess in order to drive the Ferrari, I need to be Mario Andretti. But there is only one of him so I guess none of us will ever understand
Yes, I have built several Dumble replicas, and at least 3 or 4 of those with real parts. Q line resistors, real vintage date code RN65s, Mepco electra blue Metal films. Draloric LCAs, vintage 6PS and 715/716s etc etc etc, solid core wire, tandy coax, and emulating layouts from known classic amps. Yes if you use the OG parts you can almost build it by numbers and chances of it turning out great are almost guaranteed. I would argue easier than trying to do it with modern parts because the recipe is time tested. And I don't doubt for a second that the *vintage correct* parts work. My original comment is that the newer boutique manufacturers can and are building D style amps that sound as good as the vintage ones. And you don't even have to take my opinion on that - Look at all the Dumble players people here put on a pedestal playing non dumble amps now - Santana, LC, etc etc. I will never be on their level as a musician but if the non OG, modern interpretation is good enough for the gods then I suppose I shall demean myself to something less than the original.
Your interpretation of my "playing with the layout" comment is a misunderstanding - And if my comment came out flippant I do apologize it was not my intention, I'll clarify here. You know the layout of components plays a role - to quote the Dumble interview:
"Can you "Dumble-ize" a Fender amp to the point that it shares the Dumble philosophy and sound, or would it be a compromise?
It's a compromise. The actual physical construction of the Fender limits what can be done. In fact, after the last Steel-String Singer mod I did to David Lindley's amps, he no longer uses the Fender Bassman I Dumbleized for him. He wanted this luscious transparency and response--like floating in white clouds--and I came up with special circuitry. I can use a Fender chassis, but you have to rip everything off of it, fill in all the holes, and re-drill it. They're just a little bit too squashed. A distance of half a centimeter makes a big difference in the way something sounds. It's a science involved with what's called circuit constants."
...said in classic Dumble style. Some truth, some flourish. Lead dress in the first few stages is pretty critical to getting the most out of a dumble amp no? If you look at gut shots of any number of dumble amps you'll see similar lead dress between the plate and cathodes of most of the gain stages. I know you know this - You have been around awhile and you've built any number good sounding D style amps. It's part of the recipe. But like a recipe, you can mix and match things and if you know good technique, you can use unorthodox ingredients to achieve the same result. Ferrari used to use large wooden forms to shape the aluminum body panels on their early cars. And used to use predominantly sand casted aluminum parts for the engine. Now it's more CNC milling than sand casting, and they use modern machines to press and form the sheet metal. Guess they should go back to the old ways of doing things. Guess they should go back to the way Enzo did it.
Tony, I do not mean any disrespect - Anyone who has spent 10 minutes here knows you have built fantastic dumble style amps. I've often wanted to gut an old musicman myself and do a version of the tan super high plate voltage Dumble you built awhile back. But to argue that "it doesn't sound like a real dumble" because "you've never played a real dumble amp" [that's a little presumptuous, I have] or "you cant make it
sound/feel like a real dumble without OG parts [subjective] is wrong. Boutique amp guys who are too busy making amps to haunt the halls of TAG are doing this, and pretty successfully.
There can only be one Tag Skinner. And we all know Tag Knows Tone. LOL.
"It's like what Lenin said... you look for the person who will benefit, and, uh, uh..."
Bring the one with the Xicons! 
