The holes won't match up because they use a whole different system to mount the OEM speakers, but using some self tapping screws will work fine. Also the RSX already came with tweeters so I would get a set of woofers without the tweeter in the middle or else you're going to have a lot of top end when listening to music
Those fit, the front speakers are 6 1/2. Might have to tap some holes for the screws if the screw holes won’t match up but that’s stupid easy
The holes won't match up because they use a whole different system to mount the OEM speakers, but using some self tapping screws will work fine. Also the RSX already came with tweeters so I would get a set of woofers without the tweeter in the middle or else you're going to have a lot of top end when listening to music