Hi Steve May I suggest you find a local car trimmer to do this as itโs very specialised and the sunroof has tensioners along the sides which usually need replacing otherwise the roof will not sit correctly on its runners or in the car roof frame, As long as the actual sliding sunroof frame is in good condition a trimmer will do this quite easily , not sure of cost but I suspect around ยฃ200/ยฃ250
Removal is quite easy, undo it at the front, open it 1/3rd of the way, undo the retaining screws at the back, open it again but only from one side so it โtwistsโ on the frame then you can just lift it out . Hooe this is of some help installation is simply the reverse