I did that conversion on my GS 44. There's an outfit called RigRite
http://www.rigrite.com/Travellers/NF...Ftraveler.html that sells the Nicro Fico tracks, cars and block sets. My track is the 37mm X track, which is probably what yours is, too. RigRite sells double cheek block kits so that you could have a proper traveller with 4:1
purchase that will mate to the existing track.
You don't want to change the track if it can be avoided. There should be a substantial backing plate under the track, that you would have to drop your liner to get to. You do not want to drop the liner if it can be avoided, as it runs to the outer
hull and then the settees and other components were put in afterward. It would quickly turn into a big
project.
PS: I had forgotten to grab you the manual off of the
boat and the
wiring diagram. Will try to grab it next time out to the
boat.