Just wanted to share that I finally got around to installing these door speakers yesterday after a year of the box collecting dust in the garage.

I picked them as I recall because there was a review on Crutchfield about them essentially being a direct drop in from the factory speakers and they have a pretty high sensitivity rating of 92 dB which I took to mean they'd be easy to drive.

Have to say this is probably the easiest car door 2-way component installation I've ever seen/done. I used a pair of Modifry door spacer rings but according to a Crutchfield review you could just reuse the factory plastic, I assume by drilling new screw holes.
The tweeters literally mount back in with the factory metal bracket - you need to use the included tweeter flush mount rings, pry the OEM tweeter mount bracket off and bend a thin finger of it flat but then it will screw into the Polk tweeter with the factory screw. You can then re-bend that finger to fit around the new tweeter and reinstall into the door card with the 2 factory screws.

Like others, I opted to mount the crossovers with a strip of strong double-sided Gorilla tape in the little plastic bracing pocket thing in the door card towards the 'rear'. Didn't need to cut or modify anything at all on the door card or in the door.

Didn't need to solder anything either as I used some Metra speaker adapters , cut their male and female connectors off and used the included crimp connectors (from the speaker kit) to connect the Metra speaker adapter wires to the included speaker wire to run to the input on each crossover.

Definitely these things have crisper highs than OEM, and the woofers seem to handle mid-bass much better - I actually had to tone town the treble and increase the bass a bit on my deck but night and day better sound now. With the factory speakers I couldn't really hear music above around 40-45 mph (top down, as S2000s should be!) even with the windows up. With these Polk speakers, I can still mostly hear music up to maybe 70 mph before the wind noise still overpowers them.

Highly recommend these if you just want something 'decent' to upgrade from your 20 year old factory speakers (mine were working just fine, but we all know they were never amazing).

 

I'm very happy with DB6502s! I installed these a few years ago and they've been great. For a modest sound upgrade that allows for top-down listening on the highway, the DB6502s paired with an Alpine power pack (which I got EXTRA imaginative with finding a hiding/mounting spot) with the Modifry bridge harness so you get 2 channels @ 90 watts.

I'm not sure what you did with the tweeters, unless they've made changes, but for me, with the way the wires exited the housings, I needed to cut out that little "bridge" portion above the tab; I didn't want to place too much strain on the wires by having it pressing down on them. Pics will do a better job of explaining. Maybe I could've done it different, but I don't think so.

Also, I bought the Modifry rings, but ended up re-using the OEM speaker baskets; no new holes or drilling required - the speakers will screw right in to existing holes.

Here's some pics of my install. Not trying to thread-jack, just figured I'd add to yours. I also did the same thing with the Metra adapter harnesses and the crossover mounting!

 

I installed the same speakers. Tried to get the tweeter brackets off the original speakers, they wouldn't budge so off to Homey the Clown (Home Depot), picked up some utility box blank covers and made my own brackets. Didn't know i could buy those brackets and was in the middle of the install so had to charge through it.
The spacing of the mounting holes are 2" apart with tweeter in the middle, so 50mm. Drilled the holes to create a slot for the wires, used a nylock nut and done.


OEM tweeter

OEM tweeter removed

Holes drilled, 2" or 50mm spacing, then center hole and a series of holes to make a slot

Slot opened up

tweeter pocket installed

tweeter dropped into pocket

Installed