so i have the stock nonbose system right now and I'm debating to switch out te front speakers with some focal polyglass 130 v1. Should i be expecting some better sound quality or not so much?

 

definitely, but I would get a separate amp for aftermarket speakers, the bose system doesn't put out nearly enough power to adequately power aftermarket speakers, not to mention it runs in a different resistance than most good speakers.

 

i got the non-bose system though, still should throw in an amp?

 

Yes I would go with a 4-channel. I'm running Hertz compotents up front 4-6x9 in rear with a 10" PPI sub in a 4080 enclosure. I had the Bose system.