Looking at exhaust and im having a custom mandrel bent setup done on my 6.2L. The exhaust guy recommended I go 4 inch off of the ARH collector but told me 1 7/8" primaries are "way too large" for the 6.2L and said he could build me a set of 1 3/4" or 1 5/8". Well needless to say 1 7/8" are going on the truck regardless, but I am not sure if 4 inch is too large off the collector? Also I plan to run cats in the Y pipe of the ARH headers. Anyones advice or has anyone used 4 inch off the collector? Planning a single muffler and 3.5" tips. just trying to figure out what is best without comprimising performance or reliability and since 1 7'8" are "way too large" I don't know if i can trust him for the 4 inch recommendation.
shaw_426hemi
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