Todd,
Wouldnt everyone with the SHO Y pipe go with a 5502 2.5" vs the 5503 2.25".
The exit pipe is 2.5" out of the cat and then run a reducer to 2.25" into exhaust. Wouldn't this be the ideal setup for this muffler.
OhSigmaChi is referring ot the shorter series of the same RPM muffler for $10 less. 18" vs 15"
Can also be had at
www.partsamerica.com They do have free ship specials at times.