Okay, now the question of where and how much...

Well, with the few replies I got to my R question I gather that my block is shot. So the question now arises, where can I get a replacement. Granted it will be a used one, but where can I find one that is useable? Also, now that I'm having to replace it, what kind of price am I looking at? Lastly, since this is all happening I am seriously toying around with the idea of having whatever block I get bored out and purchasing bigger pistons, sleeves, etc. so as to increase the bore and horsepower. To those in the know, what would you suggest as far as that goes? I've heard mention of replacing the old pistons with 730 or 830 pistons, etc. How much of an increase in h.p. am I looking at, how much cost, and what's the best way of going about getting that done? I appreciate the help folks. God bless.

--old fashioned farmer