Is there anyway to tap in an aftermarket amp into where the stock amp is for those who had premium sound setups. I mean yes we all have the wiring under the drivers seat to plug the stock amp in. But I am curious as to what sort of device if any we would use to turn that plug into aux outs so we can replace it with another amp. Reason I ask is because I'm getting a stock Infinity headunit..(if it ever arrives at my door)and I would like to put componenets in my car once my money situation gets better, and I want to make sure that I can plug an amp into it without using a line out converter because I only want to use one line out converter to run a sub at a later time. I hope I did'nt lose you guys. Let me know what you think. And what I should do

Well no help in this area... It's ok tho.. I figured it out and I know what to do.. I know this has been asked before numerous times and I am prepared to do a write up on it. With some pictures etc.. I know not many people keep or go and get the stock double din headunit but it's something for future knowledge to keep it stealthed.