I am not positive on this, but if I am that would be an engine you would want to keep. I believe the engines with the 010 on the last 3 digets means it is a 4 bolt main and also it has a quite a bit better grade of cast iron. If it is an original truck engine it would have the low performance heads. Probably a set of better heads, either the 1.94" intake or better yet the 2.02" and a mild cam would make a vast improvement without spending a whole lot of money. If I am right about the engine being a 4 bolt main with the better block, I would hold onto it.