Big block rebuild - where do you buy your parts?

I understand. If you insist on putting it together like this, then I recommend you install that camshaft down around 102 or even 100 ICL. That will give it a much better chance of being something other than an engine that won't pull a greasy string outta a cat's ***. Also, give it a good HOT ignition curve. I would use one of the FBO total timing limiter plates. Use the 14 slot. Plan on setting the initial timing at 20 degrees for a total of 34. It will likely take more, but that will be safe to start with. ....this is of course assuming you don't have a 383HP, in which case the pistons will sit HIGH in the bore at tdc. Since we have no pictures, we don't know for sure.
Again, Rusty... I thank you. Really do. Tomorrow is tear down day and I'll post a pic before I disassemble it ( piston in bore)