There is no point in mocking up the wheels to a width that in not commercially available or one that was never provided by the OEMs unless you are planning on spending a lot more money on a custom width housing and axles. Rusty but Rare 1976 Chevy K10 Sport Truck Revival! The 1' wider that was stated in paul/chuck 's book may have been miss spoke. var t=new Date(); '72 Cougar a Custom Classic Truck" Peterson Publication; June or July 1999,