I have a 1987 Ramcharger 4x4 with a 360ci under the hood. I wanna leave behind the stock suspension and upgrade to either a 6 or 8 inch lift. I have no body lift and my goal is to be able to put 35-37 inch tires but enough clearence not to hit or rub(and maybe down the road go a lil bit bigger on tires). I have also thought about doing a 6 inch lift with a 2 inch body lift. I'm not sure which is better. Lastly how much backspace do I need on my rims once I plant 35-37 inch tires on my truck?