This item was brought up in another thread, I was trying to figure out when Mopar first started using this. Part # 2951590 big block cable # 2951589 small block cable, 2951592 big block spacer, 2951593 small block spacer, 2951594 bushing all, first shows up in the 1969 parts book section 9 (V8 engine.) I don't see it listed in the 70/71 parts book but it must have been available. It shows up again in 72 same section but as a set of brackets with new part numbers. Anybody have a 70/71 with this part? I think it was available as part of the trailer towing package as well as Police /Taxi.