NAAAA the 18-2 does not have assymetrical hulls but has centerbaords like a P19. I "think" it did have 4way jib cars. Take a pic of the mast ball /...

Popeye is 100% rught. Dont try to mix boats. The nasts mount differantly. the P18 mast will be WAYYYYY to big and heavy for the H16.