To hell with the factory speaker system

Soon after I bought my Yukon, I installed an aftermarket deck. As always, lost the rear door speakers as well. Recently bought 4-6.5" speakers thinking I would just by-pass the factory amp. It kinda worked but one rear door speaker still didn't work and made the good speaker sound terrible from lack of watts. Tired of pissing around, I installed an aftermarket amp for the 4 back speakers with new wires. Made pods for the top rear speakers. Now just waiting for a small sub to complete the sound. What a crazy difference.