Almost all factory unique Mustangs get my attention. I've always liked the "7-up" Mustangs as I've always loved the 15 inch turbine wheel...sometimes I feel like the only one who actually appreciated the tough stance the 87-90 Mustang GTs had with these rims and it really gave the LXs a clean, but tougher look IMO. Now, they were a PITA to keep clean, but well worth it. I was never a big fan of the 10 hole LX wheels or the 91/92 16 inch 5 stars on the GTs.
I also appreciate the McLarens, but I've probably only seen one or two in person. I'll tell ya another unique Fox I like...the 92 (?) red LX convertible with the white top and white wheels.