Suppliers have them, trick is finding a part in their cats! Or hard to use web site!
Here's what I found:
MU 73A357 is the harness 3774S clip set
NPD 13A357-1A harness 13A357-1AK mounting kit
John's 85920 harness 29361 wire loom mounting kit?
My '64 1/2 vert. Ordered May '64. D code 4 speed, handling package, caspian blue, accent group, Ford blue manual top.
'68 vert. driver. Owned since '77. C code AT, AC, PS, P disc B, PT lime gold, standard black interior and top. NOS RF fender and left quarter.New top and folding glass.