[aigel]

Definitely will NOT need a full rebuild at that mileage.

The task at hand is to disassemble the engine down enough where you can get the broken stud out. Of course all the others should be changed at the same time if they are Dilavar. I am not sure for your model, but on most engines only the lower studs were Dilavar as they see the most heat. Anyway, to get the studs out, the case can stay together and pistons and cylinders can be removed as a unit and re-installed undisturbed. I'd go this route on a 58k car. The heads, I would rebuild with new valve guides. This all said and done with new gaskets / seals and some odds and ends can be done for under $2500 DIY. Far from a full rebuild.

Good Luck!

G