If you have the underhood room, a drawthrough setup from the old 301" transams would be a snap, mounted sideways. Those turbos are good for 300 or maybe 330 horse worth of air. The turbine housing is a .82 A/R T3, and should be good to 4500, maybe 5000 on a 250".
Check out pics of turbo'd slants at slantsix.org. There are pics of that setup on a slant.
Dave
