Big block rebuild - where do you buy your parts?

I didn't see pistons mentioned. That's a big cam for stock compression. Jes sayin.
Stock pistons Rusty.. I'm going to measure how much they are in the hole, ( late 69 engine) and just cut the heads to try to make some compression. Simple , low buck build. Don't have a lot of $ to play with, but had good success in a 68 383 and a 66 440 years ago with stock components for a street engine. I see your tech stuff on here and know you've thrown quite a few together.
It's going in a 71 Demon. Has a stock built 727 with shift kit, no convertor yet. And 410 8 3/4 sure grip. Street driven purpose and beat the hell out of it at time. I have a dual plane edelbrock intake and am looking for a 750 DP to round it out
Working on finding a good distributor that I can adjust the advance to suit it and have a set of headers given to me. Idk if they're 15/8 or 1 7/8 primary tubes. That's all I have for info for you guys right now.