Muncie Transmission

[Mr70]

If it's an "F",and not an "R",that would stand for FLINT Michigan Assembly plant.In 1967-68-69,they were only manufacturing the Larger GM "B" body:
Chevy Impala-Biscayne-Bel Air-Caprice.
Pontiac Catalina-Excutive-Bonneville.
Oldsmobile Delta 88.

[blue thunder]

Since it is a Muncie M-20 could it be for a GTO because I wouldn't imagine a full size family type car having a 4 on the floor. I quite sure that it is a letter F.

[Mr70]

Alan
I'm not up on the Indians much,but I don't think the Flint plant produced the GTO during the date of your transmission.

1967-68 GTO VIN Plant Codes
B=Baltimore,MD
G=Framingham,MA
K=Kansas City,MO
P=Pontiac,MI
Z=Fremont,CA

Family size GM cars could & did receive the Muncie 4SPD back then.
For Chevrolet "B" Body:
*In 1967, 14,600 got the M-20.
*In 1968, 6,596 got the M-20,& 1,052 got the M-21,& Only 124 got the M-22.

[blue thunder]

Rick,
I guess that pretty much identifies this thing then. It must have come from a 1967 Impala or such.
You have been a big help for me, thanks for all the information about it.
Alan