[Rustykey]

Could someone offer up the backspacing needed to run a 20x8 front and 22x9 rear on a 64 Catalina? Im doing a protouring build and it will ride low and mean. I know most wont like that look but any help is appreciated. I love them all, stock and modified. Also, whats the widest wheel one might get in the rear? I found a smoking deal on some Coys C5 wheels and were curious if the backspacing would work. I am new to the forum and own 4 Pontiacs. 2008 G8 Gt, 2009 G8 GT, 64 GP and 64 Catalina. I look forward to building some good relationships on the site. It took a bit of searching to find this one.