couple wheel questions.

[noonzor]

did some forum/thread searching and maybe im blind but couldnt find what i was looking for. i want to run 13" disc brakes up front and 12" in the rear to ensure the truck stops when i want it to. so im looking to run these wheels....

http://static.summitracing.com/globa...b-510206_w.jpg

in a 15x12 5x4.75 5.5 b.s. rear, and 15x6 5x4.75 3.5 b.s. in the front. just curious if im gonna have room for everything.

aswell, i need to send in my measurements for my fab 9, and was wondering how to figure out the width without having to buy and set the wheels and measure.....

thanks guys!!