We'll do it for around $20,000.00.thash said:I know, you'd think 390 bhp is plenty. But I'm curious, if you threw enough cash at it, as to what's possible. The 3800GT has a pair and it sure looks like there wouldn't be an issue with room under the hood as the chassis appears to be identical. Has anyone done any research into this? Any idea on what size/brand of turbo's other similarly displaced V8's use, like the twin turbo Audi V8 that goes in the Spyker C8. I figure this will be a $20,000 project, that sound about right?