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No it is a discontinued kit from them about 8 years ago Amazon open box sale $75 for a cat back stainless steel system 1990 460 super cab long bed 4x4 zf5 and it’s not about miles per gallon it’s smiles per gallon she gets 8mpg loaded or empty with 4.10s and limited slip
I have the Gibson cat back on my 460 and love it. I recently bought the MBRP S5149304 and was very disappointed in the kit the manufacture boxed it damaged and the straight through muffler on a 4” system was necked down and had an ID of 2.25”, so much for straight through. I returned the kit...