This is the bushing for 1st & 2nd gear for the GM SM465 4 speed transmission. This bushing is for 1st gear from 1968-77 and 2nd gear for all years. The over all length of this bushing is about 1.839". From 1978-on, the 1st gear bushing changes (about 1.859" over all length). If you need the 1978-on 1st gear bushing, please see my other listing.