You likely will never find a decent set of these. I searched Canada wide for 65 -66 with no luck and ended up fabricating the rusted out sections. The 66 fender is identical at the lower back mount where they typically rust out and can be welded in. Good luck in your search.
Shipping fenders from these US parts yards will cost you quite a bit but it's possible that they may have the fenders you seek.
You could also try Peace River Auto Parts in Alberta 780 624 4611.
Lastly, I don't want to raise hope here, but I have a decent pair of fenders and a pair of NOS quarters for 65 full size that I bought for my 65 Laurentian "nostalgia drag car" project. I need to recoup some cash and have been selling off other parts but I'm now trying to decide whether or not to sell the car and the many parts I accumulated for this project including a full bench seat interior, 72 d-port 455, full size 12 bolt rear, Offenhauser dual quad intake & valve covers, Laurentian lettering etc etc. I need to make a decision on this over the next few months. I'll post here first if I decide to sell it off.
