Glad to see this thread is still alive.
Hahahaha.

HAHAHAHAHA. First of all, easy with the superlatives... "Better than any other speaker"? Negative. Better than stock? Sure.
And 5 1/4" components are the bastard children of the speaker world, like 4x6's. No one with any budget/taste runs them - they just don't play low enough, unless you also run an 8" mid (which sounds awesome with a 12" woofer tuned low, or a 15"). But then you're running full active crossovers which is uber-complicated for even experienced people.
My new setup is finished, pics of the 3-d models and specs are in the fabrication thread, but I'll link a couple pics here too ~
Specs:
- Alpine something-or-other high end headunit
- TRU Technololgy T4.100 w/BB IC upgrade

- CDT HD-6 6.5" mids in .3ft^3 sealed door boxes
- CDT TW-26 1" Silk-dome tweeter
- CDT SatNet 560i crossover (this makes
all the difference)
- Soundstream SS10R Reference 10" sub in a huge (1.5ft^3) ported box, tuned to ~37hz, with an F3 of around 44Hz.
- Misc sound deadening (mostly Dynamat Extreme), not finished with that part yet.
Doors:
Trunk:
Might update the thread when I get pics of finished install (door panels on, trunk cleaned up - box is bolted in but everything else is just thrown in, etc) - also I'll grab a pic of the head unit and ipod dock.