i am buying some kappa 6x9s next week, and i was curious if i needed any kind of mounting brackets? i heard that i might?

The rear deck already has a bracket for 6x9's. Your on your own with the doors.

yup.. just unscrew bose and screw in kappas. i have the same speakers and they are the ****. are you hookin up an amp to them? what kind? just curious...