James:
If you do a search for "forced induction" threads for "supercharged 250" beginning 5/16/08, you should find a record of my experience "rootin'" an inliner.
Got about 6000 trouble free miles on her now and lovin it!
But it's a street rod, not a racer.
Be happy to help any way i can, including drawings of the manifold, pulley ratios, timing tips, etc.
