Small Block gave me an engine for my '48, a early '80's model 4 bolt 350 that has been punched out 40 over. Everything is there but the crank. First question: will any crank work and whats the best for it.
Next, it came with a set of injector heads I think, they have 1.94 or so intake valves but they have those four bolts down the center of the valve covers. The quadra-pig manifold that came with it was also machined in the two center bolt holes on each side to make them bigger. Question #2: Why?
Question #3: Are these heads going to work, they have marks like this: " //" on the ends of them. I like the big valves but not the valve covers. what are they?

Any help would be appreciated