Im new to this forum and ive been playing guitar for about 6 years and i have 2 guitars. one of those guitars is a Ibanez RG7321 7-string guitar. and i was wondering if the EMG 707 pickup would fit on this guitar. Or what would be a better pickup for a heavy metal sound? Also what else would i need to change on thew guitar if i changed the pickup. ive been playing for a while but im quite new on changing pickups. so id appreciate your help and thank you.