It's doable, but a fair amount of work. I stuffed mine w/ just <1.25" of lift up front and OEM rear coils. There is a slight rubbing on the frame (about the size of a quarter) which was expected due to width of tire and my choice of backspacing, but, otherwise, it clears at full stuff lock to lock.I do not know how you're going to fit that big of a tire without at least a 3 inch lift and still cutting out your inner fender well . Even then your wheels have got to at least be -30millimeters or you're going to have to get wheel spacers to avoid rubbing your frame . If you are successful please post photos of how you did it. I could barely fit my 285's with what I have done to my truck, which is a lot.
- Cut and cap firewall
- Seam and seal firewall
- Trim fender liner
- Trim fender (~1") or extend the bump stops ~0.5".
- Relocate washer res
How much material you remove will depend on your choice of wheel. It's definitely not a bolt-on affair and not for the faint of heart. I opted to extend the bumpstops to limit the up-travel, but i'm thinking of cutting into the fender for the clearance to get that 1" of up-travel back.