A while ago my father in law couldn't find window guides for his 1972 ranchero, i was able to hook him up with some plastics manufacturing guys which could produce them for about a third of the price real ones fetch on the secondhand market.
I was able to sell a few spares on ebay for a nice 5$ profit. Now i'm wondering if there are rare out of production plastic parts which would be worthwhile to remanufacture? Any suggestions?

 

what do you mean my "small"
I know in the 74 Dodge dart line, the A pillar covers (plastic) are needed, also the
door panel at the top that is plastic, and cracks, in fact all the plastic in the 74 cracks..
I've looked into it, but I don't have the funds to start any project
Best