Justen, the #2 engine is the one that David (Lextreme) originally called his "LPG engine". I bought it from him during a fit of insanity when I got aggravated with my #1. The #1 had just made 498 HP on the dyno with mistimed cams. At the time we couldn't figure out why we couldn't get any more out of it than that as it has/had a bunch of good stuff in it. Later when we broke out the dial indicators we found that the reground exhaust cams were 11 (cam) degrees out. That's why when I'll be selling it, it won't have a set of cams.
David's LPG engine was built with Ross pistons, Lextreme rods, supposedly oversize valves (which turned out to be standard size), and a few other goodies. We found some metal shavings left in it by his builder, so my builder went completely through it again and added a few more goodies (ARP head studs, coated main bearing shells, piston squirters, shim under bucket valve train, Kelford cams, and LOTS of head porting.) This is the engine that I'll be transferring my supercharger & manifold onto in the near future, and will be running on the dyno.