Converting '70 Muncie from M21 to M20

[Stephen B.]

My '70 came with a wide ratio M20 transmission that someone changed to a close ratio M-21 gear set. What exactly do I need to convert back to a wide ratio M20? From my research in parts books, etc., it appears that I merely need to change the counter gear set.

Thanks in advance.

[Peter M.]

Re: Converting '70 Muncie from M21 to M20

Stephen,
Input gear and cluster. I am doing the same thing on my 67.
Kind regards

[Stephen B.]

Re: Converting '70 Muncie from M21 to M20

Thanks Peter. I have to replace the input shaft anyhow as it has 2 broken teeth.