Hey guys I have an 05 SCAB FX4 that I just want to replace the muffler on. Do you know what size the pipes are on my truck? I am looking at getting a magnaflow siso to replace the huge stock'er that FORD put on these trucks.
Also if you happen to have a part # number for the maggie siso that would be awesome.

 

Stock pipe size is 2.5"
performancepeddler.com has good prices on their Magnaflows. Use discount code ebaydiscount.
#12256 18"
#12286 24"
#12216 14"

 

Thanks for your help
and do you have to get the on that has the offset or can you get the straight through design?

 

no prob
I have a si/do (12158). Offset is up to you. I would get the straight through design. Not sure on how the difference in the sound would be, but it would make it easier for a muffler shop to install.