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  1. W

    5.7 Rebuild or replace with a 5.3 LS?

    I am new to the forum, so sorry if this has been discussed 1,000,000 times. My 99 GMC 1500 Suburban is right at 300k miles. She does not smoke or knock or anything, but you can tell she is getting tired. I think she left the gate open and a bunch of her ponies escaped. I've put a good tune...
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