Any company is going to go for the bigger market first. In this case the first gen Camaros. I am in a similar boat as you. I have a second gen Camaro and the manufacturers have been slow to get parts going. BUT they are doing it. I see more and more cool parts all the time. My guess is that as more demand is made for Firebird parts then the parts will follow.
If it makes you feel better, if I had a CNC I would make you some parts.
Right after I made ME some parts.