Water outlet bolts - original part numbers?

[StoningtonQB]

At the risk of asking what is quite possibly the dumbest question ever asked on this forum, does anyone know the part numbers of the original water outlet bolts? I'm replacing this TERRIBLE chrome water outlet the last guy put on this thing (leaks no matter what) with an OEM replacement and am also looking to do away with these stupid allen-head bolts (either they came with the Edelbrock manifold or the water outlet themselves). The Chevy dealer is beyond useless. They can't look up the part numbers and their computer only goes back to '76 (even though I just said, "look it up for a '76 then"). It's like going to Advance AutoParts with these guys! I bought a copy of the assembly manual and the part numbers are missing. Anyways, one bolt must be taller than the other, so I was hoping to either find out the right numbers, or find a couple of good used bolts. Anywhere I can find part numbers like this?