Hello all, I have been browsing rx7club roughly for some time now. I have been observing other poeples posts and informative things to do with rotarys. I am interested in buying a RX-7 2nd gen, but need a few questions answered to see if my goals can be met.

I want to build a drag car, but not too sure about which engine is dominate. I know a 3 rotor is out of the question unless you can mate rotors together and do manifolds custom ect. .... Anyways i have seen multiple successes in drag rotaries, but will a 13b due for 10.5 and below? What other recommendations do you have? I am just looking for a quick idea about engine possibilities and possibly the pros and cons and how far they can be taken.
thanks!