w116 300sd trans fluid leak/ change to manual trans

[lovedieselsd]

Haven't put it on the lift yet. I assume it's the front seal? does the rear seal ever leak? or the torque converter itself??

Then again, before doing all that work.... it's pretty easy to find complete 602 engines with manual trans set-ups around here. I'm thinking to do that swap, anyone ever done it and do you need to make new motor mount
points in the chassis? or I could install 5-speed off a m110 or 617 N/A...