Wow! Your car looks amazing, love it! What is your suspension set-up? If I go new rims I definitely need lowered.I've had these sp500s for seven years and had them on 2 different terminators....and when I bought them back then from John purner they were a lot cheaper than today. They still look brand after their yearly metal polish. I believe they were money well spent and I would get back every single dollar if I decided to part with them.
And keep in mind they're not just for looks....they are LIGHT for their size and relieve some unsprung weight from every corner versus say a Chinese cast rim like the replicas. I had 17x10.5 replicas at one point and these 18x11 CCW are about 6lbs lighter with tires mounted. The 18x9.5 fronts are lighter than a factory 17x9 by a few lbs. Less weight = more performance