general pm keeps it all runnning nice, that's a given, and of course upgraded plug wires and basically a 40k mile tuneup type of deal. sounds dumb, but coming from imports I have never seen "sfc" I'll feel like a jackass for not realizing the abbreviation but please expand it for me. lca's I got covered, the only time I have to worry about that ( on my honda) is on a disc brake conversion...but atleast I know that one.

what kind of hp can be gained from upgrades you suggest ( minus the lt4 route).

The tranny is the 6 speed, so no converter to play with, but I love a clutch anyway.