GMstrong
I'm Awesome
If any of you guys have the 99-up nbs and have longtubes you probably know how hard it is to fit in the cats without having to get custom ypipe made well i didnt,I just bought 2 3 inch magnaflow spun cats which are about 9" total length and band clamped them out to the longtubes then reduced the outlet to mate to stock ypipe.They are great replacement cats as well,i imagine they flow damn good too i looked threw them with daylight and could see about 1 1/2" circle.got mine for 140 shipped from summit.These are the smallest cats i know of.Also this truck is 4wd with the 5.3L
