Carter AVS 4736S--4966S

Here are the part numbers that you should be looking for based on the year and transmission. Now I have had luck using a automatic carb on a 4 speed but I have always had a stumble trying to use a 4 speed carb on an automatic.

Auto Year 4 Speed
4429S 68 4428S
4637S 68
4618S 69 4617S
4640S 69
4738S 70 4737S
4740S 70 4739S
4741S 70
4968S 71 4967S