gofish, this is my set up, 84 cuddy, and i have replaced mine without moving the engine. i take out the rod box on the starboard side and pull the slack in the cable to the middle of the boat. then do the same for the helm area. i know its always mo money mo money witha boat, but if you can change both and go NFB. i think the cable length is 17.5 ft. just a guess but you can get some prices with that figure.
that other system looks like a replacement, but i'm pretty sure the system you have is a teleflex helm & cable. i have never used or seen the roflex utech system, but it looks like knock off of teleflex.