I came across this supplier on Ebay which carries various K-car reproduction lenses/light bezels. I don't have any first hand expiereince with the seller or the quaility of the parts.
http://www.ebay.com/sch/m.html?_nkw=dod ... icas_y_mas
http://www.ebay.com/sch/m.html?_nkw=ply ... icas_y_mas
http://www.ebay.com/sch/m.html?_nkw=chr ... icas_y_mas