Here for your review is a genuine O.E. cluster gear and an Input gear for Muncie 4 speed M20 with Small 7/8" countershaft 1963 -1965. Cluster Gear counts 25/22/19/17 tooth, GM part number of 3905465. Input count is 21 tooth GM part number of 3924781. Ratios are 2.56 1st, 1.91 2nd, 1.48 3rd and 1.00 to 1 in 4th. Very nice EARLY M20 cluster and Input set.

ATTENTION: do not ask for shipping any other way than what is offered, we will not ship these heavy steel parts in some little mail envelope or flat rate thin no-good box just because you want it shipped cheap. We ship in new heavy box that will get this to you. Questions about alternate shipping will not be answered. If shipping fee seems too high, you can always drive here and pick it up if that seems more economical to you.