have a chance to replace my shot tranny with Muncie 4 speed taken from a 69 Z-28, 302. Dont know yet if it's an M22 or what exactly. what would be a decent price? I think it's in really good shape but haven't seen it yet. thank you.

There are a few in the classifieds section. Between $350 and $1600.

From recent searches, I found that a rebuilt M-22 should run around $1600. However, if you want it to match up with your car (date, etc) it's gonna run you much more.

This Guy puts out some beautiful M22's and other muncies:
http://store.manchestermuncies.com/trforsa.html