Ok so im thinking about upgrading all my speakers in my 1998 Ford ranger extended cab and adding a subwoofer. I have a Dual XHD6425 headunit. Installing it was easy but im worried about installing an amp, sub, and speakers. This is the setup i am thinking about purchasing. I will replace all 4 factory speakers with Pyramid 578GS 5-Inch x 7-Inch /6-Inch x 8-Inch 200 Watts Three Way Speakers. the sub will be a Legacy - LWF10X; 10'' 400 Watt. and it will all be powered by a Tis T510a 700 Watt 5 Channel Car Amplifier. The amp comes with an 8 gauge wiring kit. Im trying to stay relatively cheap. all this and a truck box for the sub is going to be about $150. Im not sure whether this is a good setup or if i have enough power for everything. One thing in particular is how do i run all the wires without them interfering with each other? and how do i get the speaker wires to the speakers through the same way they are already running? All the items mentioned above can be found for sale on amazon.com