i got a flowmaster single... would it be too much hassle to change it to dual ?

 

Nope not at all! Are you doing it yourself or a shop?

Which flowmaster do you have? Right now, I have a single Super 40 but I'm getting rid of that ......I'm doing a dual conversion next Saturday with a pair of Flow Super 44.

 

To install my driver side gt take off, exhaust shop quoted me $200.
Hang the muffler(with their hangers), mid pipe over the axle, and either Y or H it in up front.
I would cut the bumper cover. Maybe this Friday??

 

its going to be done at a shop... when i had the flowmaster installed... got it for $100... one thing im th inking about is the driver side... cuz theres no spot for it.. im wondering whether to get a new rear bumper or haev it cut out

 

It's thin plastic. I've been practicing with my dremel on a piece of similiar plastic.
Edit: There's a template here on the 4.0 forum for the cutout.