Some of the fastening hardware needed to be altered- hex head instead of 6 point, and using the non nylock etc. Frankly just details. Also it appears without a exact model of compressor you need to individually find and fit the rear lines.
I had my indie to the install, so I can not comment on how hard it was- but as every job there are three parts: time, knowledge and money. I don't have time- but I have the other two.
I agree it most likely matters not if the unit is a sanden or seltec.

In the end I'm happy.