1st gen transfer cases
 

I have 3 1st gen transfer cases
2 have sideplates approx.3" x 4" on the l.h.s
1 transfer does not
i'm just wondering if these cases with the side plates were made for a P.T.O outlet or are these a different style of case ie;chaindrive

According to Marlin:

Type 1-A Carb 4Cyl
Installed 1979 - 1980
Top Shift
Short Style Case
Short Low Range Shift Rod
C-Clip Retained 2WD/4WD Rod
8 or 9 mm Flange Bolts
Noisy Style Gears (I take this to mean straight-cut gears)
21 Spline "Fuseless" L43-Style Input
27 Spline Outputs

Type 1-B Carb 4Cyl
Installed 1981 - 4/1983
Top Shift
Short Style Case
Short Low Range Shift Rod
C-Clip Retained 2WD/4WD Rod
8mm Flange Bolts
Noisy Style Gears
21 Spline Input
27 Spline Outputs

Type 1-C Carb 4Cyl
Installed 4/1983 - 8/1983
Top Shift
Tall Style Case
Short Low Range Shift Rod
C-Clip Retained 2WD/4WD Rod
8mm Flange Bolts
Noisy Style Gears
21 Spline Input
27 Spline Outputs

Thanks for the help
I'm going to rebuild one of the boxs but was unsure which would be the better one