Oh, I found something at the pic n pull!
I've been wanting to do a sunroof on mine. The kits are really expensive , and I've seen people grafting factory sunroofs out of other vehicles onto their trucks. It's got to be an outside sliding one to work on a regular cab...
Check this out, the darn Land Rover Discovery has a simple, perfect size, outward sliding sunroofs that simply screw apart from the inside and only need a square hole to be mounted in!!! It sandwiches itself around the hole/ sheet metal.. And they have two of the exact same ones on EaCh Land Rover
Front one and a rear one