I know this guy that is removing a Harken furler from his Tiger because he is switching to a full batten jib but Im not sure if it will retrofit to a P19 I imagine Salty Dog marine can make you some new bridles wires pretty reasonable to make it work I can give you the guys email address if you want more info.
"CLOSE-OUT" --> Headsail Handling
http://www.harkenstore.com/uniface.urd/scpdinw1.ShowProd?B4RPMEB9Y9CDNW
shows a Harken428 for $180. with all the specs. Notice the laod 950lbs, this is same as H434 "high load furler"
Harken Italy page shows picture.
http://www.harken.it/HarkenCustomProducts/standardhardware/avvolgimentoeriduzione/avvolgifioccosmallboat/428.htm
I thought it was only going to be the bottom piece, but it came with the top piece also.
I am making a small "cage" to keep the line on the drum. I'll try to post some pics.
Jim Casto
Ausitn TX
NACRA 5.5uni Two Hot
NACRA 5.7 #461 Junkyard Dogbite
Austin TX