I didn't remove my hardtop but did have to lift it up by 2 or 3 inches. To do this I removed the two mountings behind each front seat (behind the seatbelts) & removed the mountings halfway along the hardtop in the rear loadbed, that attach the hardtop to the bodycapping/tub.
You'll probably have to remove the front headlining to access the bolts along the top of the windscreen.
Unless it's an early hinged windscreen, it will have four large dowels in the top edge of the bulkhead that protrude into the lower edge of the windscreen, so you won't be able to slide the screen out without lifting it upwards first.
