[Grumpy old man]

I just did mine recently , originally a 6 I changed the 6 cross member to the V8 so I could mount the V8 in the front holes and still use the 67 bell housing to mount a M-22 Muncie . I used all new parts from Summit . 11" clutch , You need to double check the input hole on your bell housing to make sure it matches the input size of the M-20 you may need a spacer to have a good fit . you can't rely on just the mounting ears for support , Mucie's are famous for the ears cracking without the proper bell housing to trans clearance .


https://www.summitracing.com/parts/PIO-FW100

https://www.summitracing.com/parts/PFT-MU5473-1B