will a landrover roof rack fit ?

may need to have some brackets made up.

If my memory serves me well, which it mostly does, it will go straight on.
Just realised the date of your post, knowing you it's probably fitted by now.

A Landrover rack will fit, with a slight modification. A Landy has wider gutters and a narrower roof, so the most Landy racks can be modified. I have done this twice. Remove the brackets and flatten the bit that goes into the gutter with a good old hammer. When refitting set each bracket +- 1" further out, this might need new holes drilled for the bolts. And that’s it. They usually sit slightly high, and can look a bit odd, so if you have brackets made, order them 2" lower than the original ones. Alternatively fit a pair of driving lights, sandladders, high lift jack, shovel, jerry cans, bow saw, turfor winch and a few more things like I did, and it will look OK.

If you struggle, ask any time.