Just had a look through my files, but I cannot see one of my old ZT-T 260 with a raised boot floor...not raised it looks just like any other ZT-T:
However, I've just been out and took a photo of the saloon equivalent (R75 V8) and it looks like this:
Which compares with a non-V8 R75 saloon, which (in my case a LWB with a full size spare and high line Sat Nav etc) looked like:
Hope that's of help.