porsche teledials 15"

thinking about sticking a set of period 944 porsche teledial alloys on my cabby, i'll need a hub adapter to do this. wondered if anyone had any experience doing this and what are the pitfalls if any. they 195's x7.5j rim widths. thoughts.

what are the et on them mate? looks like the high et ones

sorry for being a bit clueless, et?

ah, offset. not sure yet. aspect ratio 65 though.