late 60's wood steering wheel

Thats a Rallye wheel, I have one on my 68 cuda.

Horn pads come up frequently on ebay. Many of your salvage yards over there would surely have them laying around as well. Same goes for the horn mechanism and horn pad retainer (if you dont have that either).

You can also get a brand spanking new repro horn pad from PGclassic for $105 - http://moparplus.com/product_info.php?cPath=57&products_id=958 They also have the horn pad retainer, but you'd probably be better off getting the retainer and horn mechanism as one piece from a salvage yard.