85 Chevy anyone?

Transmission visual id aka my 87 shop manual
200C tag in on right side of tail shaft aprox in the middle right side of tail shaft.
Model HHB
The pan on the 200C is almost square with the rr corner angled off.

200-4R tag right side close to the end of the tail shaft.
Model CRF
The pan on the 4R is long and tapered with angles both sides towards the back.

700-R4 tag is on top of pan. Right rear.
Model YK
The pan on the R4 is almost square.

Mine is the 200-4R on the Olds 307 wagon but I would assume that the basic shapes, other then mounting to engine, would be similar to the 305 Chevy.