| i did a combination of both, 4 and 5. 4" front pipe and 5" after that. since there is no good aftermarket exhaust for a reg cab, its all for a 06 crewcab dually. i also lost the flange and went with the 4-5 adapter. it was kinda a PITA, but i like it.
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2002 reg cab/wrong bed
lb7 zf-6 speed, ppe hot+2, sbc/dd, afe intake, 5" mbrp, green keys, sd centerlink/sleeves, kennedy lift pumps, flex-a-lite fans, banks big head, autometer boost and pyro, 5% tint, gooseneck hitch, fluidampnr, aluminum shifter, 305-70-16 on 16x10 eagles, line-x |