Hi Brian the link alister gave you is a good link and i should think that probley 50-60% of the owners on her have brought there cars off pj gradys and if they havn't i would think that gradys have worked on there cars one time or another.
When i was looking for my car we brought it from gradys and have had no problems with her to date,and that was 3 years ago (great scott has it been that long)
its just thay are good if you dont want the hassle of bringing a car over from the states yourself ," i know i didn't"
all the best and welcome to the UK delorean car club
Tyson.