How hard is it to fit these on a LBZ? my buddy is looking at a set for his truck BUT he has a ranchand front bumper. I could not find anyone who has run them with a aftermarket bumper. i do know they will rub with a stock bumper. The bars are cranked up about a 1 1/2. Does anyone have any input on how they will fit before he goes and looks at the wheels/tires?