Need explanation from experienced TUNER!

I have a 1990 Honda Accord with the f22a1 engine and the basic boltons, I/H/E and cat delete. Can some PLEASE give me the complete rundown of doing the a6 runners with the h23 throttle body. What custom work is needed, what about the gasket, Does adding the a6 ecu help or no? Thanks for all of the help!!!!:iceslolan