[Low-Blow]

I acquired this block from an older gentleman just down the road from me. It had a stuck piston, which I was able to get out. He had left it out under a shed, and it was rained in no telling how many times. The cam is stuck, the lifters look like they are now part of the block, and it has several stuck valves. Before I invest any more time in it, I wanted to know if it is even worth messing with. Your input is greatly appreciated. Thank you!!