Muncie M21 case on eBay
VIN 124379N640646 OR 124679N640646
Case stamped 19N640646
Dated P9D25B
Seller jade154
Location Portsmouth, New Hampshire
https://www.ebay.com/itm/MUNCIE-4-SPEED-TRANSMISSION-CASE/263890164072?hash=item3d71145968:g:AAYAAOSwtgJbexIt&vxp=mtr