[jbclassix]

There are 4 different versions of the 4500. We will say there is a wide ratio and a close ratio... then there is the early shift tower version and the later shift tower version. chevy used the wide ratio 92-94 close ratio 95+ Dodge used the close ratio only. Chevy used the late style shift tower 95+ and Dodge went to the late style in 98. The later style 4500 works AWESOME behind a diesel if you use a high axle gear. 6BTs are awesome with the 4500 and 3.55s. The 6.5L with the 4500 is awesome with 3.42s for stock size tires and 3.73 for 33s and 35s.