Thats up to you. You are gonna be paying a lot more for Stainless steel. Plus the climate in NV is very dry so you probably won't get a lot of rust. You would be ok with aluminized unless you really want to pay the extra cost.

 

333

 

Desert Racer,
Just go to Hot Exhaust website, they are running a month long site wide sale. They have the 3" magnaflow kit. Do a quick search and you'll find a "fordtruck*" code or something to plug into the discount code area. This will work and the kit will come up to $385ish with no shipping. I just did it the other day and it worked, they are really on a good sale right now.

The number is 15609 I believe, its 3" single exit pipe.