2008 JBL woofer replacement issue

Bought some new woofers from Crutchfield. They came with specific install instructions. According to Crutchfield you just have to remove four screws holding speaker in housing. My JBL system speakers are all in one housing, can't remove just the speaker. So where do I find the housing that has the four screws holding speaker in that Crutchfield shows in their instructions? Was on the phone for about an hour with a tech. explaining my speaker mounting issue, sending pictures back and forth. He was baffled that I had different speaker mounts than what he was showing.