Here are some scans from the RX-8 book by Jack Yamaguchi, I recommend anyone to pick it up or any of the RX-7 books.
They're in black&white so the scanner would work faster.
21A and 15A
RE10X, an improved version of the 10A intended for a light coupe
RE13X, a power electric assisted RE. Most interesting is the combi-port, a switchable intake from side to peripheral. I don't think it's been seen since the Cosmo that raced at the Marathon del la Route. A bit of the left is cut short, I didn't want to bend the spine too much.