Is this for the blue Duster? I saw the videos you posted of it, that is a nice ride and sounds real good. Looks like it already runs real strong. What cam are you running at the moment?
Thats probably the one. The cam currently is the Purple Shaft P4452761. (.450/.455 lift)
These ones?
[ame="http://www.youtube.com/watch?v=FFqp7CIoR4g&feature=BFa&list=FLBoJOlFj9k-6MoBfxKdf1Ng&lf=mh_lolz"]71 Duster with Dynomax - YouTube[/ame]
[ame="http://www.youtube.com/watch?v=xNBloyEnf-A&feature=relmfu"]71 Duster with Dynomax - YouTube[/ame]