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Mornin Jake, I just recently sold my last 70 Gas and it had an after market (NOT a JD brand) 3 pt hitch off the rockshaft also. As far as I know, any JD 70 row crop or wide front (not sure about the Standards) or any tractors like the A and B and G also that have rock shafts can have a JD or about any other brands 3 pt installed. The rock shafts are all the same size and do the lifting, of course, and there may be slight differences in how the top links and lower lift arm pivots may be mounted. On my 70 and most all the JD's I have seen converted, includign the 70's, the lower ball pivots for the lift arm mounts attach on the sides of the drawbar frame. As far as the top link mountings, I have seen several variations includign a big frame/brace off the rear axles to frames and mounts based on the drawbar frame, but Im sure if yours is a regular run of the mill 70 theres a way and place to mount it, depending upon the hitch you purchase. One designed specifically for or taken off another 70 would be good. Im not a fan of the JD factory hitches that had those enormous conglomeration top links that mounted to the rear axles and had the links for plow connection (wierd looking and heavy and cumbersome as *&^%), but if Correct Police is a concern, you may want to pay the bigger bucks and get a JD hitch that type or with a regular top link. However, the regular top link mounts are much handier for most regular 3 pt equiopment in my opinion. Remember, you will need the correct rear power trol couplers to switch from remote hydraulics to rockshaft operation, and Frank In Tallahassee (FIT) (The Hydraulic Guru) and Clooney had all sorts of pictures and discussion on that subject a while back on here. If things dont have wires attached, like hydraulics and clutches and trannys, Im not so much of a hand to figure them out lol. Ol John T Nordhoff
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