I'm building a 1992 Ramcharger. Stock ride height and tire size seems OK for my intended use. But there seems to be a real lack of aftermarket parts for the Pre '94 Dodges. Is this due to lack of demand? I am looking for an air or electric locking differential for the Chrysler 9.25 rear end but haven't found one available. The Dana 44 front end appears to be no problem as far parts availability. This vehicle won't be used for rock climbing or in mud bogs but having all four wheels pulling would be of value on loose sand and gravel and mud of the u.p. of michigan back roads.