WANTED AND OR HELP EAA WITNESS GOLD TEAM /CZ-75

I AM LOOKING FOR INFORMATION ON HOW I CAN GET SOME HIGH CAP MAGS FOR MY EAA WITNESS GOLD TEAM 40 CAL..
I CURENTLEY HAVE 4 12 ROUND MAGS WITH PLUS 2 BASE PLATES??(14 ROUNDS TOTAL)
CAN I GET ANY MAGS THAT HOLD MORE ROUNDS???
I SAW A LISTING FOR SOME 15 OR 16 ROUNDS MAGS, WILL A PLUS 2 BASE PLATE WORK ON THIES MAGS TOO??
ARE MAGS FOR EAA 40CAL, CZ-75, AND TANGFOLD ALL THE SAME??
Wilkes_dan@yahoo.com