For sale is a defroster kit for 69/70 Riv. Grp # 9.778, part # 981437. Looks to be all there. Box is a bit rough. Price is $195 plus shipping. Part is located in NY.
Probably dont want to break up the kit but I could use a grill. The factory one has gotten so dry and brittle its falling apart.
Got so tired of looking at mine that I had a package tray mat made to hide it. Probably looks better now than ever
