You can never have too many Fidrych RCs, Scott.
A PSA 10 worthy of the grade would be a fantastic card. The last one I saw sell on eBay was weak for a 10 and it sold for $2K. Finding a nicely centered 9 can be tough enough.
If you have a chance to post your cool custom '76 Fidrych in full size, please share it. Great idea to make one!