I would love to talk you into rebuilding your stock one. There's a shim kit available for them that takes a LOT of the slack out of them. 

Where are you located? I have one here that I shimmed up and would gladly let you try it. If you like it I'd sell it to you or you can buy the parts to tighten up your shifter. 

As a matter of fact I think so. I'll check.

Out here on the Wet Coast.
Where does shifter mount on the tail shaft? I think it mounts directly onto tail shaft, rear two lower holes. Not that it matters it is a console car and shifter assembly and stick suppose to correct and original for car
I think it should be on lower rear two holes but the bottam of levers for the rods seem to hit the crossmember. I have it mounted on two upper holes so there is only two bolts holding it onto tail shaft. I think it should be mounted on bottom two/rear holes so that the middle hole and bolt lines up with hole in top part of tail shaft. Is this correct?
Rods all line up and shifts 1/2, and 3/4 but will not shift into reverse. I read you need a special tool for installation to align all the rods in neutral and not easy like a Hurst that you put pin in to establish neutral. Still sloppy even in forward gears. all the gears can shifter by hand under the car with all forward, reverse and neutral the way it is suppose to be I think? (never used Muncie shifter before always used Hurst Comp plus shifters before)
When you pull up on the tongs it pulls up the pin but the shifter still does not seem to move over to engage reverse. Any help would be GREATLY appreciated. Tried swapping transmission crossmembers, and transmission mounts but still will not accept shifter on lower holes. I don't know what I am doing wrong. Drive Train is BB/M20/12 bolt posi. Everything good to go except this shifter.
Everyone I know say junk the old Muncie shifter and put in a Hurst Comp Plus but I am stubborn and would like to get this shifter installed and working correctly.
Thanks for any and all help!

I believe this is the correct mounting for Chevelle. 

I'm a full size kind of guy but they use the same shifter, just a different way to mount it between the 2.

That is the way I tried to mount mine but the lower ends of the levers hit the crossmember

The shifter is very simple to rebuild. It's made in such a way that I don't think you can assemble it wrong. If you like I can make a Youtube video and take one apart, then put it back together.

As I mentioned, I'm not a Beaumont guy so this is just a guess. Would someone have maybe changed the crossmember in your car and it's wrong?

And also, the way you have it mounted now is just with 2 bolts? They have to use 3 mount points to be stable, so yes, that can't work properly that way.

Hoping someone here with a 64-67 Beaumont/Chevelle 4 speed will see this and be able to tell you what is wrong. If nothing else I will have time next week to run to my friend's place and check his 67. When I was there the other day he had it on the hoist and it looked like it might be there for a while.

I thought it was the wrong crossmember so I found anouther crossmember and bought it and it turned out to be the same as the crossmember I already had.

I'm stumped.  I know it must seem silly to anyone who knows this car but..........

I made the one image more user friendly!

To me, you need to move the shifter down into those two bottom holes that are unoccupied. That frees up a top hole for the bolt that goes through the shifter body. It will thread into the hole in the tailhousing. 

When you do that it will move the linkage forward and I bet it will clear the crossmember. However, you likely can't move the body forward because the linkage is too long, correct?

When I get a chance tomorrow, I want to talk to you and we need to have these 2 images handy when we talk. It will only suit me later day though I think,

i like the newport in the background lets seee a shot of that good luck with that 4 speed you at right place

I also think the reverse shifter lever on the trany is supposed to be facing down not up or am I seeing things wrong in that pic.