I'm thinking about narrowing the rear to tuck some deep lip rear wheels.has anyone done this? how much did you narrow? what rear offset did you use? any pics? i wanna tuck a 20x12 rim with a 335 tire. thanks

 

I do. Its a fabricated 9" but I had the housing built to the width I wanted at the time. This is based on my 06 regular bed using the stock rear width as my guide. I did it this way on purpose so that I could run my desired wheel (12" wide) and not have to modify or even touch the bed sides.

Ultimately I had racecraft build the housing so that the total distance, axle flange to axle flange, was 8" narrower than stock. So 4" on each side. This allowed for a 12" wide wheel with a 5" backspace to completely tuck and not need any bedside modifications to fit. Plenty of room. Obviously the wheel tubs had to be redone.

 

Stock 8.6 housing narrowed 2.5"s per side for 5"s total. Dutchman ford 9" housing ends with the correct bolt pattern for the stock brakes. 15x10 wheel, 4.5" backspace, 325/50 drag radial sits about flush with the bedside.

2.5"s is about the max you can narrow it unless you reclock the brakes, then you might be able to get another inch with the stock leaf springs.

 

im not keeping the leaf springs. a 4 link will be put in

 

I used a Tbss rear end. It's an inch narrower per side. They all are 9.5" 14 bolt with the g80. You'll have to either drill the new bolt pattern or order custom axles. It will work great if you're planning on 4 linking it... you'll need to cut off all the OEM brackets. I think I paid 500 for mine shipped with 40k on it.