you dont need an IPAC with a 60 in 1, just a jamma loom.
Also, none of the games would use all of your controls (there is 1 game that would use 3 buttons, gunsmoke)
Now if you got one of those 1XXX in 1s, it could use all the controls, but you'd still need a jamma loom. Lastly, duel =/=dual