[fliprayzin240sx]

First off, your not asking about rebuilding an engine, your just talking about replacing stuff that should be replaced before any shop. You cant honestly expect to drop a 10-15 yr old engine thats been sitting in a junkyard for god knows how long and expect it to run reliably. Doesnt matter if its a redtop, blacktop, bluetop, pinktop etc, you need to do preventative maintenance on it before dropping it in. If your so stingy to change shiet like thermostats, water pump, belts, oil pans, etc, then you will end up paying alot more in the long run when that engine starts having issues, because you gimped on it when you did the install.

The difference between a S13 redtop/blacktop is a couple hundreds, tops. You want a reliable engine, blacktop wont be a good candidate (for me atleast). Why? All blacktops came from 180sx in japan. I have yet to see a 180sx that hasnt been BEAT TO HELL. Go find an automatic SR engine and youll have a better chance of finding them in a better condition and less abuse. It doesnt take much to make them work with a 5 speed tranny.