I want to replace the crappy OEM speakers in the 453. Would prefer to replace the door speakers by taking the interior panels off, instead of rebuilding the exterior (LOL). On my 451 I pulled the interior panels and installed the speakers by flush mounting from the interior.. Anyone been down this road yet in the 453? Since the speaker is hidden behind the rounded 'bubble' where the patterned holes that are molded into the trim for the speaker... It could be tricky?