Happy New Year to you. I may be mistaken, but I think most TD replicas use the wiper assembly from early 70’s VWs. Afew weeks ago another member was needing the complete assembly and the holes that the wiper shafts came thru were the spacing as the ones on my VW based car. perhaps this will give you a starting point. I forgot to mention ,his car was Chevette engine also. Hope this helps.
