oh i know, i have done my reasearch and there will be plenty of room when done to fit it into place, already got a lion pan insert getting ready to get rivitted into place. also the crossbar at the top will be moving up higher on the dvd tray side to allow for the mobo. not my first rodeo big guy. been modding pc's for 5-6 yrs but this is my first mac mod, so i will prolly come to the experts if i get stuck.