Given the "vague" definition of the Wheel Spats (Pants), Gear Leg fairings etc. in the RV-3 plans, I doubt anybody could produce a reliable set of RV-3 fairings?
I also hate glasswork, but made the first attempt for our RV-3B the other day. Scruffy but they work... next job to fill and sand and get them ready the painter
I used RV4 fairings from fairing etc.The bottom fit great the top had to be cut and glassed back together.but was able to make them fit good with a lot less effort than making from scratch which I did on the RV6 and RV8 before you could buy fairings.