Rebuild 5.7 or buy something else?
I paid ~$800 for machine work (bored, honed, line honed), balancing, and short block assembly (including file fit rings, checking tolerances, etc). I was definitely over $2000 for the short block including bearings, main studs, etc etc.
I built a 3.58 stroke forged motor because I'm going to road race the car. I wanted bulletproof. All other NA builds I would recommend a factory short block or a forged stroker motor. High boost motors seem to live longer with factory stroke.