Im wondering what you guys recomend? the 352 in my bird has 82000 miles on it ,when i took the intake,valve covers & 1 head off the moter was filthy inside,caked up w oil,my question is should i rebuild or just try to clean it out ,im just worried if it had poor oil circulation are the rings & bearings bad or scored, i just dont want to open a can of worms by taking it apart if i can just clean it up, what do you fe experts recomend?