I have a 92 engine going
Unless you get top breather heads (93on) do not plug the breather from the cases. I repeat DO NOT PLUG BREATHER HOSE!!!
I have a 92 engine going into a 97 frame with 97 transmission.
I have plugged the bottom breather because there is no room for the fitting.
I opened the plug on the primary side (for timing)and fitted a hose to this for a breather. I turned the motor over and got lots of air and some oil so do you think this is a safe option?