It's my understanding that you can premark the degrees on them and then on race day jack up the front end and change to the degree you want. PM SVTSeth if you want more info as he's running them for race use.

Rick

Owner of 00 #1611 Silver (Totalled) 98.5 T-Red SVT #6180 Buckshot77@msn.com Misc 3L parts for sale