I have a trailer hitch off of a 1974 164, and beleive it or not it will bolt up to a 240 with some minor mods, like hacking off the rear plastic valance between the frame rails, and taking off some brackets etc. My question is the newer 240's have a long bolt that goes through the frame, and with a long enough bolt through the trailer hitch flange ends too but on the mid 80's through final production (I guess) has a nut welded on yht UNDERSIDE of the frame rail. So are you supposed to use the exhisting bolt and come up from the bottom, or get real long bolts and nut and bolt it which would be a more secure way it seems.I am not too comfortable with screwing a bolt from the bottom into a wleded on nut rather that a washer and bolt through the entire thing. Did I lose You? It is one of those you had to be there things.