It can be done, but it won't be easy and you will absolutely not be able to jam some 335-30-18 tire under there, lol.
You may need to shave the fenders (rolling might not be enough), delete the quads, clearance the tailpipes, pound the inner wheel well with a BFH, and even then your offset would have to be perfect and your tire size shouldn't be too big.
The common replica 18x10 has a 22mm offset. I could do about 3/8" towards the outside and the remaining 5/8" towards the inside. Then I'd do a 285-35-18 or a 295-35-18 and it should clear. If you go with a bigger tire, forget it.