Very rare to find a NOS wiper motor available and if you do, you'll pay thru the nose for it. I have a front & rear OEM NOS set for my 60, keep it stored at Ft. Knox, lol. Before I ran across the NOS parts, I used a company to refurbish my front wiper motor, headlight washer motor, etc. and they did an incredible job both mechanically and cosmetically (link below to company). As mentioned above, refurbish everything while you're on the job and it'll last you another 30 years. Also, there's a thread on here where I guy utilized a Porsche wiper motor as a direct replacement. . .been a while since I read it but I believe it was a pretty straight forward swap.