Looks like Kenny Wayne Shepards car.
Trying to figure out what colour would go with crazy plum ...I like the paint job..
Minus the Black '72 Charger (Stolen and hasn't been recovered last I heard.)Love that car. Very well done.
The build info etc can be found here, along with more pictures.
http://www.moparmusclemagazine.com/featuredvehicles/a_body/mopp_0808_1970_dodge_duster_340/
Looks like he's got a whole fleet of mopars...