It isn't going to seal with the bikini/wind jammer/duster combo.
You can bend the tops of the doors in to touch the roll bar, but it isn't going to make a good enough seal to keep the rain and weather out.
Same with the wind jammer, it doesn't seal either, and actually creates more wind turbulence with it in than with it out.
And the duster (tonneau) leaks around the roll bar struts in the back, and becomes your very own pond after a rain storm, unless you fabricate some type of bow system to hold it up, Kind of like what a pickup has under a tonneau cover.
All 3 products are nice for looks, but that's about the extent of their ability.
'87 YJ, 4.2L built and bored, 8" of lift, 8.8 rear, AX15/NP 231J, Tom Woods drive shafts, Flat fenders, 12,000LB winch, Custom bumpers, Rattle can paint job. Never completed...