While my car was being delivered Tuesday, I looked around the shop that will be helping me put my engine in the car and saw a 20B. I'd never seen one before so thought I'd post pics (also practicing the posting of pics).
Having been a former RX-7 owner I saw and heard plenty of the 20B's. The sound a 20B puts out is music.....something between a Ferrari and Lambo at "full chat" as the Brits like to say. Well worth a listen.
Finally, pictures included (now just need to work on sizing). These guys order the 20B's in from Japan and have been putting them in their race cars, with good success.