Hey all, So, before I actually get in there and find myself in a position I can't get out of I figured I would throw this question out and see what experienced minds can tell me to expect. 1955 F600 I rescued from a farm. Transplanting 1 ton running gear to make a tow rig. I was told by the PO that the ones he got it from pulled the Y block and dropped in a 361 FE which is the current motor. Nothing wrong with it at all other than leaks but the Clark 5 speed behind it is literally a shot in the dark when it comes to shifting gears. I have a 351W and a C6 but I don't want to get too deep into this project and end up with too much to do. I want to work on it in stages and maybe do the engine swap next winter after going thru engine and tranny. I have a T85 and overdrive in the garage. To me, it would be just as much a hassle to rebuild that as the C6 so I was wondering what I would have to do to get that T85 in there without major surgery. The overdrive would sure help driveability as this will be my only truck for a while. I'm thinking new clutch and throwout bearing but wonder if I will get away with just replacement parts without having to voodoo a whole new setup. Since the truck is too tall right now to get into the garage, I also don't want to have to pull it apart and then find I have to get the 500# pile of steel they call a transmission back in there if it doesn't go in fairly easy. I'm wishing that most stuff that old will be fairly compatible, but you know what they say about wishing in one hand... As an aside, I also have a 3 speed side loader from my long gone 52 F1. It's the one with the Ford bolt pattern and not the integral half bell housing. Either one can go in there for all I care right now so if someone thinks not going overdrive would be easier, please let me know. Just to make it more complicated, I even have a SROD overdrive out of a Mustang. I have too many transmissions... Any helpful friendly advice before I get myself in too deep?