FYI the JL 10TW3-D4 does not fit into the esky stock box unless you are stubborn and used to making bad decisions like I am.
The cutout diameter is 9 1/8" and the maximum size of the bezel is 11". The JL exceeds both of those dimensions but I do own a router and Dremel.
The mounting surface isn't perfectly flat either so it would be best to choose a sub that has even mounting points - unlike the JL which only effectively has four. I supplemented sealing and securing with RTV.
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That's pretty big box, probably larger than the JL calls for but I'm of the opinion that most subs speck smaller volume boxes than ideal for marketing purposes...
Also, my vehicle amplifier was mounted with 3 M10's and one plastic push on clip which created a massive resonate vibration so be sure everything in that area is bolted down and secured properly.