so i have a three speed transmission that i need to identify, but have no idea how. anyone wanna try these numbers out, or point me in the direction of a place to look them up myself?

driver's side main body: GM 18 3952645
C 18 6


driver's side tail shaft: A 20 6

passenger's side main body (upside down): GM21
352269


passenger's side tail shaft: 326558 GM 52


any of this make sense to anyone?