LA block hunt/search maybe shift to piston hunt

Cu$tom Pi$ton$ $ound$ expensive
I was wondering if a cheap piston / rod combo from chevy that would work with the 3.51 crankshaft in a 340 block. I have heads, pumps, intake, etc. but need a block.
The 340 block is available, close, a bit more expensive, but I don't have 340 pistons or stock crankshaft.
cheaper is better, and I believe one of the machinists here said that turning down a crank a bunch is not cheap

Then just get a farkin 340 or 360 crank instead of that weird *** **** you always gravitate towards. That's your cheap way out. The way you should have done it to start with. Every time you try to reinvent the wheel, you end up with a square one. Every. Single. Time.