Ok, I know there is a bunch of sites to help you decode your engine, and I've been to 'em all. Maybe I'm just dumb, but I can't figure it out for sure. It has a short water pump and 'goofy' (according to the guy at the exhaust shop) manifolds. Not sure of the originallity of these, as the PO seemed to use whatever was laying around his farm to kkep it going. Also, what kind of heads are these, and are they any good? Any help would be appreciated.