Intercooler - https://buschurracing.com/
Engine - http://www.ffwdconnection.com/
Gaskets- They're everywhere almost, check the places I post
Clutch Parts- http://www.dsmparts.com/
Fuel- Again, all these places
Turbo Manifold- Again, many places
Thermal Exhaust-...
I've swapped engines, trannies, etc. on previous DSMs. I recently bought one with a slightly bent rail and most of the front parts missing from rolling into a tree because of a failed e-brake. Have gone to the junk yard for a core support, radiator, etc. and been transferring the stuff to my...
Had the same problem with my Turbo Buick once. More knowledgable buddy came over to check it out, bypassed it in 5mins with some extra wire we had lying around.
I've had an '87 Buick Turbo-T, 2 LT-1 Trans Ams, and 2 1G AWD Talons. Honestly, the Mustang would be the easiest build for pure speed at that amount of money. To keep it nice, you're not going to be able to find a Buick in good condition and have enough left over to make it fun with that...
I've seen 3 of them I think, just found them on random file sharing programs. More recently though, I've started ordering DVDs of that kind of stuff. Have 2 Ghost Rider DVDs, KartVader, etc. The Getaway In Stockholm vids are a bit more difficult to find for good prices though.