I can say, after modifying the grill for the tweeters AND riping off the case for the tweeters, the 6501 mm's woofers do NOT fit. use the 5 1/4. Now I have to get creative. I have the polk tweeters with polk x-over wiht stock woofers. im going on a trip to the smokies.
please no one else try to use the 6.5 polks. they do NOT fit.
grrr