Ok, well its either the 59* or the 48* and if you know small blocks you should be able to tell right away what lifter angle it has. All the other specs are definite unless the block has been machined, and the deck height is alot lower.

Alot of the R3 blocks didn't have the oil filter area machined.

I would still think this block is worth around $600 in this economy.

you'll have to figure out the lifter angle and the cam size 50mm or 60mm.