I contacted a company who makes engine "dress up" kits. They have several different colors. I'm currently test fitting some of these caps for the 3.7L engine. So far most of the caps fit and i'm trying to talk to them about making caps for some other engine components. Would anyone be interested in buying these kits if they can make a complete kit for the 3.7L?? I think if i got others who would be interested in this, then they may just make more than one kit.