I sourced a hardtop from a slantback (with turret hole) and my buddies at BTR here in Chicago made it work.
Lots of welding / fitting / swearing / modifing, but its now a permanent part of my M998.



Both the B and C pillars had to be modified to make the top fit as it should. All is now seam sealed, riveted, and welded so it aint going anywhere !
Once summer comes along I might cut back open the turret hole and make some sort of escape hatch / closeable sun roof thing to get some air in the cab on warmer days.
We shall see..