I have 37" tires and I am planning on using a 35" tire as a spare to take the stress of my spare tire carrier. will this 2" diff. be ok? or will it cause problems or even damage the drivetrain when used? and if so Will it be worse when installed an a 14 bolt FF with a detroit or on a front open 10 bolt. Im thinking that it would be no problem on a open diff because one axle would just rotate faster then the other but on a locked diff im not sure. Anybody know?