Adding Bose speakers to non Bose system

[bluemonstercali]

I could be wrong but 1 advantage you do get with Bose is the processing. time alignment etc. like someone mentioned before, if your only using fm or xm then you wont tell because the incoming signal sucks. I purposely looked for a bose system and swapped my dash speakers, rear doors, and added 1 amp ( to power my 10" sub) and a sub. sounds clear and can get loud if need be. its definitely not rattling doors but you can feel it.