I have a 07 coupe g35 bose system. I just want to replace the front speakers along with the tweeters. Can i use the Polk MM 6.5 inch? I don't want to change anything else. Do i just need the spacer along with whichever speaker i purhcase? what is the best speaker i can use without adding an amp or anything to the bose setup. and is there a DIY thread on how to replace these speakers and tweeters?
Thanks

Realistically if your gonna add any kind of decent speakers you need an amp

The bose Hu will run 4 ohm components but at half the rated power
I dont know the power rating buy im asuming its 25-30 rms at 2 ohm.
So you would be looking at 10-15 rms@ 4ohm

You will need a spacer also to clear the window