Those are some old school thumpers you picked up man. The old RF stuff is pretty cool stuff.IIRC those are 100wrms each and single 4ohm voice coils(please correct me if im wrong)...So you are going to need an amp that does 200-300w @ 2ohms...A Kicker ZX-300.1 would work perfect and you can get it for $125 shipped from OCS..

Kicker ZX300.1

For the speakers in your truck, its 4x6 on the dash, 6.5" in the doors, and 6x9's in the mid panel...

 

Thats a mono amp..Is that what I really want? Whats the difference between a mono amp and and a 2 channel amp? Which is better for what I want to do with it?

 

Mono amps are subwoofer oriented. They are a single channel amp that will not run a stereo signal. The nice thing about 'Class D' Monoblock amps is that they are usually more efficient. This means you get more power and pulling less amperage. They do yield a slightly higher distortion rate, but you will never notice the diffirence when it comes to subwoofers...Mor the most part, mono amps have alot more control for subwoofers than a 2-channel does...

Also, ohm loads are a big factor in deciding what amp you need...Most two channels will run subwoofers best at 4ohms bridged. Some will go down to 2ohms bridge but not very many, and they are usually higher-end amplifiers. You need a 2ohm final load which is why kickers ZX series is perfect because they all do thier most poer at 2ohms...