My T56 swap required me to remove the Reverse Lockout Solenoid for some needed clearance/room for my torque arm mount to get my driveline angles correct since my car is lowered. I now had a hole in the in the side of the trans that needed closing. Upon searching I had found mention of such a situation by sofakingdom who gave me the idea on how to remedy this. I take no credit for this aside from mentioning the part numbers I used. I brushed on some Permatex High Tack "Purple" sealant and installed the plug.

The CAGS I wanted to remove as it wasn't used and I disliked having it just hanging on the side of the trans (my OCD kicking in again). There is no other reason it needed to be removed, it can remain there with no ill effects. I took the O ring off the base of the CAGS solenoid and put it on the oil drain plug, then installed (no gasket, just the O ring). Anyway, here are the part #'s I used with success:

Reverse Lockout Delete:

Dorman 555-086 (Cylinder Head Plug / 1-3/16" OD)

CAGS Delete:

Dorman 090-040 (M20-1.50 Oil Drain Plug / 1986-83 Horizon - 4 cyl 1.6L)

Thanks sofakingdom!