I've seen those wheels on lowered trucks, should fit fine, might have to minitub the front and roll the rear though, I would just to be safe. No idea on tire size im pretty sure 265/35/22 would work tho. Go 4/6 and do not go lower. I dailied my truck at like 5.5/8 for almost a year and I finally cracked my coilovers up a little over a inch and it make a world of a difference. I have ridetech coilovers up front and ridetech shocks in the rear but at 4/6 I don't think you'll be hating life with the mcg kit but GET THE GOD DAMN 16 INCH SPINDLES FOR FUCKS SAKE. Just make sure to minitub, roll, and raise the transmission crossmember and the mounts and I think you'll enjoy it