Quote Originally Posted by speedminded
20b? lol, it only came in the Eunos Cosmo...it is based on the 13b-rew from the RX-7 though.
yea its a 3 rotor design based on the 13B, but it has a 2 piece e-shaft though. All in all, it will make about the same HP in the end, but a little more torque. I say just go with the 13B and call it a day.