I guess at this point it will largely depend on what I can get my hands on cheapest. I'd prefer horiz. and there's a welding rig at my school, but if I can get a pair of bevel gears that might be a better choice. Only problem is vert. mounting would limit the applications, cause it would require more space and weight.

p.s. I've read L-head's biggest problem is breathing, so they get like 7:1 compression. Would it be feasible to put a small homemade supercharger on this thing? (by small I mean the intake pipe is about the diameter of a nickel) Not looking to boost the crap out of it, just to raise the compression ratio to a more normal 9 or 10 to 1.