I have to back StLou up on this one... get the Stealth Box & be done... you will absolutley not match the response fo the stealth box for twice the money unless you are a total rap/bass head.
JL amps are the creme'-De'-La-Creme' right now... The 5 channel is awesome. the 4 channels are great. The high in is critical if you want the stock head to play CD's & tapes..
After 17years in Car Audio professionally, I can say without reservation the Stealth Box is the best option for most of the HD F150 demographics.
Amps keep getting better & more powerful every year. Avoid the mainstream cd player/radio manufacturers for amps... Alpine, Kenwood, SOny, Pioneer all make great stuff, but source units are their bread & butter. Amps are a "second thought"". Alpine is an exception. but only at the $500+ category in amps.
Stick with JL, PPI, Zapco, Rockford (max Pounding), ADS (sound quality) etc.... find a good high end shop in your area.
Rob & Laura Weeks #09913 2002 DSG HD F150
--My momma always said, opinions are just like Butt-holes everyone's entitled to one, but not always entitled to show it.