I have a 85 Ford Mustang. I want to go with a Pioneer System setup. I'm looking at the Pioneer Deh1600 50watt x 4 headunit, Pioneer speakers front and rear, Pioneer 10" Sub 500watts peak. I don't know what kind of amp to get or how many channels I will need or how many watts I need. I looked at a Pioneer Amp, it was out of my price range. I saw a Jensen 340watt 2-channel Amp, I liked the price. Is Jensen an good amp to get? I don't to spend more on my amp than I did on my headunit which will costs $109.99, but if i have to I will and what else will I need?