Originally Posted by EdgeFireFighter
when u say must exit the truck i can just exit it right after the cab right? before the rear end?
i dont think its the 40's series cuz the 40's series is like a cheery bomb size wise aint it? i think its just the regular one.
On the inlet side of the muffler, ther'll be a number etched into the case. Sometimes, it's stamped into side of the muffler where it says "flowmaster". Get that number, and i'll tell ya what flowmaster you have. A 40 series Flowmaster is either a 5x10" case, or 4x10" case, usually 13-14" long.......regular aftermarket muffler size, not "cherry bomb glasspack" size.