Flowmaster's Offset
 

i was wondering what the difference is between all the different in/out flowmaster has.
Center In / Dual Out
Center In / Center Out
Center In / Offset Out
Offset In / Dual Out
Offset In / Center Out
Offset In / Offset Out (Same Side)
say i wanna keep the stock pipe and just put the super 44 and a tip, which one would i need?
i have a 06 F150 Screw 5.4.

Pretty sure you need Offset In / Center Out if you are keeping the original piping.

thanks.
one more question, whats the size on the stock piping?

2.5"

thanks bro

Yah 2.5" piping and I can't remember if it's offset in / center out or offset in / offset out but not same side....offset on 2 different sides. If you look on say flowmasters sight you will understand what I mean.

and if you do it yourself you will need some extra pipe to make up for size difference between your big stock muffler and the new one.

thats what i was wondering! thanks.
if u guys have any more info i need to know, share it!