The retrofit is fairly simple. The traveler track will attach to the beam because the F18 and I20 have the same beams. Two jam cleats would have to be added to the top of the beams. The big deal is the jib would be different. It needs to be shorter in the foot because the sheeting angle is different. Anyone who is racing a lot is replacing jibs every 1.5 years anyway. The sheeting system is the same as the mast rotator on the I20.
<br>The new trap lines would allow you to use non-metalic if you wanted. I don't think I would use them but it would be nice to have the choice.<br><br>