MSD 8428 Distributor Advance Adjustable Spring and Weight Kit<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Advance kit for MSD and Street Fire HEI distributors</li><li>Three sets of advance springs supplied</li><li>Two sets stop bushings supplied</li><li>For use with MSD and Street Fire distributors only</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41N7Z2SjdwL.jpg" noproxy>