If you go with an aftermarket wheel with the 35s you shouldnt have too much of a problem. If you keep the stock wheels you will rub. Even with my leveling kit with 35s and stock wheels they rubbed on full turn. Issue was the stock wheels. Going higher would not fix that problem. Once those 35s wore out I went with some 285/70/17 on the same stock wheels no rubbing at all.
Also Leveling kits are very easy to install.
2003 Dodge Ram 2500 Silver Laramie 4x4 My Useful Threads: How To: Make HIDS work w/ Resistors, How To: Tint your Tails, Weak Hood Shocks???
HID QUESTIONS YOU ASK....ASK