Thanks, very helpful!

So it if I installed a kick harness for SFII (cps1) and a Jpac, Built a custom CP with six buttons I could play any game in mame that used up to six buttons but that I will not be able to plug in a CPS2 PCB. Correct?
For 4-6 button games it seems like one should skip the Jpac/Jamma harness and build a new CP using a minipac or ipac. Unless I just want to play classic games (which I do).
Anyone here use a Jpac? How do you like it and is it worth it to use with a two button setup? I think most of the games I play use only two buttons...but I would probably upgrade later on.
Hmm...Thanks for helping the new guy. (one of them anyhow)