I've been looking at R&P options for about the same time as for small block early A headers. I've found one maker of conversion kits for MOPARS, and several other makers of systems for other uses.
Newsflash: I just spent a couple of hours searching the web. It looks like Flaming River might have parts that could be used in early A body cars. More research is needed, but this thread is supposed to be about HEADERS. Do I need to start a new thread?? It's late, and I'd better hit the rack before Santa gets here.
ATB and Merry Christmas to all - and to all a good night!
BC