My buddy had Fast Times out of Chicago area help do up a TT. FS does quite a few of them per year.

Dart small block chevy 427ci dyno at 1200 hp. On 91 octane and street trim it was 800 hp. He basically showed up with the car in running order with 8.2 blower pistons and $15,000 later he had a beautiful EFI TT done up in some high grade of stainless steel with a monster air to air intercooler.

change it on the fly A/F ratio and timing from idle to 7500 rpm