Filling in a Sunroof

[PDenbigh]

I'm removing my sunroof in the XR4ti so that I can get a cage.

Anyone in any of the thousands of articles in the thousands of magazines we collectively read have a tech article on a project like this?

I have everything removed and cut out, now I just have a nice hole in my roof. I'm looking for a donor XR that I can cut the rear section of its roof to use as a panel for this project. The compound curve looks like it'd be basically the same.

I'm just not sure how to put it all together. Questions such as making a lip, should it be slightly below the rest of the roof so that I can room for filler, how do I weld it and prevent warping, etc.

Any tips or resources are greatly appreciated.

Thanks,
Peter