What type of brace? Ultrex? Whiteline?

Rear H-brace is very similar to the front, but you have to remove the rear seats and the seat belts and surrounding trim to get access to the strut top.... you fit the ends of the strut bar first then attach the centre bar after the ends are in place.

I'll try dig up a DIY for the rear.

I made a DIY for the H brace a while back, I'll dig that up too.