It appears I have a bastardized drive shaft. I bought it a number of years ago and took the sellers word it was for a 68 Camaro. It has the 400 yoke with the holes in all the yokes for the plastic injection as 68's were suppose to have. It also has large u-joints 1.125" caps. Unfortunately it's only 48" center to center. I don't know what it fits, but it's not a Camaro. The search is on, although I may have one made. Thanks for the replies