Recently purchased an '88 Hunter 18.5. I would like to equip it with a roller furler and jib. Seems all items for the 18.5 are more expensive than for other models. Question(s) : 1) can I use jib and roller from a 19 on the 18.5?; 2) any such thing as a good used jib with roller furler for this boat; 3) can the existing sail be retrofitted for a roller furler (with shaft)? Any suggestions are appreciated. Thanks, dan