So? What did you end up doing?

 

Nothing so far. I ended up working Saturday and they were closed yesturday.

 

It happens. Just do it right the first time and you won't have any regrets. Think of what you plan to do in the future with mods, and build from there.

 

I converted mine from the SISO stock muffler to a Gibson Supertruck SIDO, and now after 3 years to a Magnaflow DIDO system (the Harley F150 Magnaflow system). The first change I put in a Flowmaster y-pipe and noticed a huge difference in performance, but lately I have had problems with my engine sputtering and feeling like it was going to die. When I put the Magnaflow on and got rid of the y-pipe, it is another huge improvement. It is no longer hesitant or does the engine sputter anymore, and I like the sound better than the Gibson had. I doubt there is much of a difference in the flow restriction on a DIDO or a SIDO, but it is a drastic improvement in feel. Maybe it's just the manufacturers.