This is the bushing for 1st gear for the GM SM465 4 speed transmission from 1978-On. This bushing is for 1st gear from 1978-On. The over all length of this bushing is about 1.859". From 1968-77, the 1st gear bushing changes (about 1.839" over all length). If you need the 1968-77 1st gear bushing, please see my other listing.