I have done it on both of our T2's...
On mine, because I have a hard spare wheel cover with the number plate mounted on it, not only is it bigger in diameter than the spare wheel, but it has a deeper dish, so the rear wiper would hit it, and it was impossible to get the caravan stabiliser hitch on the back at all. Since I had to space the wheel further out from the door so the wiper missed the spare wheel cover, I cut 2 bits of 25mm square box section, one went across the top two bolts, and the other across the bottom. I then got a bit of 6mm Aluminium Chequer plate that was the length of the spare wheel carrier, plus the distance I wanted to lift it, bolted that to the door where the old carrier went, with the spacers holding it away from the door, and then bolted the carrier to the plate, further up. I went a bit OTT, as I don't use the back window, as I have the camera linked to a monitor where the rear view mirror was mounted.
Been like that for about 4 years, and it's a dream to put the van on the back, as it is miles away from the spare wheel now.
You can see the before and after on the 2 T2's in this picture.
Suz's is now similar, only not as high, and I welded the square tube spacer up into a bracket that also had a place to mount the PMR radio aerial onto it as well.