i have a 99 lightning, and was wondering if i could just swap on a 90mm maf? or would i have to do something else too?
also, will 4v heads from a 4.6 work on a 5.4, or would i have to get my hands on a set of 4v's from a 5.4?
also, will 4v heads from a 4.6 work on a 5.4, or would i have to get my hands on a set of 4v's from a 5.4?
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