Need advice on Rear Speakers Stock 02 RSX

I will be installing some new rear speakers in my RSX and I am extremely confused on what the actual size of the speakers are. I have read countless posts on this website and others about the rear speakers being 6 1/2" and some that say it is 5 1/4". The crutchfield website only shows 5 1/4" size speakers as ones that fit in my 02 stock RSX. I am bothered because of course I would prefer to have 6 1/2 speakers in my rear panels if possible but have absolutely no interest in using a dremel tool to fit the 6 1/2 speakers into my panels as some posts on this site have said is required. If somebody could give me a 100% without a doubt answer on the size requirements for my REAR speakers that would be greatly appreciated. Crutchfield also includes a spacer adapter with the 5 1/4 speakers. Also, if you have any opinions on which speakers out of the couple that I will link to are the best option please inform me.

5 1/4
http://ift.tt/2ikXDGg
http://ift.tt/2il1rrp
http://ift.tt/2il4jEw
http://ift.tt/2ikXZg2

6 1/2
http://ift.tt/2ikUAhz
http://ift.tt/2ikUciZ
http://ift.tt/2ikUOFn

I am not too interested in the fact that your favorite pair of $170 speakers are a better option for me. If they are under $100 then I would love to hear about your own opinions.

Need advice on Rear Speakers Stock 02 RSX