if you want to install a easy system look up jcwhitney.com. they have good systems for a reasonable price. as for gaining power out of a 6 banger forget it. headers wont work either. most people get a good muffler and have there exhaust shop hang pipe i have the imco 3 inch cat back on my 05 4.7 an it was 250.00 out the door. also most places will drop the tax if you pay in cash.

 

Well I would be looking for a kit which I could install on my own I am also in canada so stainless steel would be nice for all the salt on the roads. I don't know anything about it agian but if I installed a flow master 40, would I still be able to use this If I upgraded the engine to 5.2 (I will probably do this when the one goes in mine.)