My 71 Duster Project

Thanks! Funds are tight right now so it will come little by little. As far as coatings, I stripped and re-sprayed the whole underside of the car with the 3M Shutz undercoating. The trunk is done with the black/gray spatter trunk coating kit from Eastwood.
3M Shutz.....is this a commercially-available product in an aerosol bomb? If so, what's it going for per can (I need to do trunk and complete underside)?