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Also, i read an article saying that they use the old pre-1986 rear main seal. Is that still true? If so, are there any disadvantages to this? Seems like they would not have switched it over if the newer one was not better somehow... And lastly, is it a full roller motor? Be nice to have that upgrade over stock.
I was never impressed with the quality of the Goodwrench engines. They are cheaply rebuilt mexico engines. When I worked for GM we had several engines we installed that ended up coming back out. A friend of mine uses Jasper Engines exclusively and swears by them.