I haven't installed any engine fresh or not without test running them in over 40 years. Installed one bad used engine in the early 70s and that was enough for me.
Its been awhile since I have actually done any of this, so I'm excited to be doing this again. I have an old truck frame with a v8 cradle I will be starting this on before I drop it in the car. Much easier to fix or troubleshoot, I agree!