You could try this amp Sony XM-475GSX
Should be more than enough to run your speakers. If you feel confident that you could install the amp your self then go for it. They sell amp-wiring kits. The main
Wire is the power wire (red), which goes to the battery, should come with inline fuse if not add one for protection. Next is the ground wire (black) goes to your chassis. Last one is hooked up to your ignition (remote)
Should already have one hooked up to your CD player just splice in. Then just
Hook up your rca jacks preamp output to the front and rear behind your cd player. Then connect your speakers to the amp pretty straightforward positive (+) negative (-) left &right front & back. Hope this helps.