[V8] V8 Twin Turbo?

[NIck Miller]

I would doubt that getting an RS6 vice turbocharging an Audi V8 is the
cheapest option.  You can get a fabbed kit for the Miata with ECU for 5-6k,
so double that and subtract maybe 1-2 grand as you don't need the ECU twice
:-D.   Now, thats if you're really lazy.   As well, a custom fabricator will
have few issues doing a turbo kit on the V8.  I've seen some of these guys
tackle far worse projects and prevail.

Or, you can DIY.  Screw buying 1200 Garrett turbo's like this tool here <---
and get some used 3K or T-series stuff, or even diesel holsets.   Learn how
to weld, or figure out a way to get manifolds made.  Make a DIY Megasquirt
for your car, and then get exhaust/plumping figured out, and injectors, and
you're technically good to go.

I'd bet at 3-4k in you'd be able to pull off an SC/Turbo kit.   20k is
ridiculous, who the hell do they think they are DINAN?  Sounds about right
with the price, hmph.