The Beast....... Its a recently rebuilt 454 bored .030 over.
  to supply a 468 cu in. at 6000 rpm requires a huge amount of air. Even a twin turbo set up would require at least T60's or bigger. Which would be every costly.

The turbo is a Roto-Master ST50 it was ment for a 855 cu in diesel.  The air requirements should be similar, 855 engine spinning half  the speed of the engine with half the displacement should be about equal. It has a .92 a/r, if it doesn't spool fast enough I'll squirt a little nitrous to quicken thing up.

I paid $300 shipped... and the turbo is BRAND NEW. best deal ever off ebay