Exact Differences Between 98 and 99
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Ok i know that the 98 LS1's have different valve cover bolts but what are the other differences, i had someone tell me they have weak main bolts, and also different ECM's is this true and are there any other differences, i had a guy offer to buy my car and am looking at picking up a NBM 98 Z28 M6 but dont want to have a bunch of problems with getting it tuned or with parts availability.
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