That's a pretty good Amp and location - beat ya by about 2.5 years, though. Amazon user, right?
I say you shouldn't go anywhere near the anchors - what if you ever need to put child seats in and that stuff has rotted through? Seems like an unlikely situation, but just two weeks ago I made a quick 4 hour trip with my good friend's two children in the back. "Mr. Joe your car is like a rocket ship!" - Heart-warming comment right there from the peanut gallery.
I drilled holes and touch-up'd over them right where the speaker inlays go through. Used some CAD (Cardboard Aided Design) to do it - made a template by penciling onto cardboard through the amp's holes, then taped that onto the rear deck and drilled through. Easy as hell, had to widen one hole to about .15" larger than absolutely necessary.
Thanks to the way the rear deck is done, I was able to route the audio wiring right back through the 'channels' created between the Amp and the rises where the speaker inlays aren't. Made for an exceptionally clean install.
There's just the faintest hum through the rear seats if the stereo (and subsequently amp) is on and nothing is playing.
2011 3.7L Performance Pack (3.31 gear); BMR Springs (1.0, 1.25), Adj Panhard, UCAM, UCA, CABs, LCAs; Tokico DSP-12s; GT500 Strut Mounts; DSS AL Driveshaft; JLT Oil Catch; TSW Interlagos 20x8.5 & Falken 255/35R20 x 4; Audio Sys; Amsoil Sig Series 5W-30/EAO17; Pypes 3" Catback;
On the shelf: H&R SS (1.7/2.4); MM 11+ CC Plates;
RICE is anyone driving any vehicle with Race-Inspired Cosmetic Enhancements.