Hello Mohawk2 and CH,
when I went to Checker to get the bushings they asked me if I wanted the updated-improved design for about 2 bucks more for each side so I said ok, the differences are that the poly bushings are red, harder, and have a difference in shape, the larger bushing is shorter as it goes thru the bracket but the back smaller bushing is extended thru the spacer. I do not know if these changes are better or not, time will tell.