Here are all the items available for potential use:
-Sony CDX-C90 source unit
-Linear Power X0-4 3-way crossover [dash mountable and adjustable from 32Hz - 5 khz]
-Audio Control EQL
-PPI PC450 http://www.precisionpower.com/Manuals/A ... ifiers.pdf
-(2) PPI A600.2 http://www.precisionpower.com/Manuals/A ... ifiers.pdf
-Soundstream Reference 700sx http://www.soundstream.com/manuals/AMP/ ... _7_10s.pdf
-Canton RS3 3-way components (1", 4", 6.5") [approx. rated at a minimum of 50 watts and a max of 125 watts]
-(2) Kicker Solobaric S10a 4 Ohm round "old skool" SVC subwoofers [tricky little devils rated at a minimum of 50 watts and a PMAX RMS of 450 watts with a .66 cu.ft. enclosure. However, if more power is available the box size should be reduced to .50 cu.ft per the original brochure

Really it comes down to amplifier selection and component matching.