[Pyrotechnic]

The turbo setup off a carbureted Buick 3.8L V6 is a good match because it's a simple draw through setup and the 250 I6 is just slightly bigger than the original application. Make sure you get the entire setup with the matching carburetor. From there it's just a matter of plumbing it all up.

Of course, if you are looking at the turbo setup and it's on the original motor...then just grab the enitre engine and put that in the truck instead.