I bought my truck with a pioneer headunit running into the Bose amp and it was working great, albeit with a ground loop whine. Recently the stereo started staying on after the truck was shut off and doors opened, although there was no sound output. Now when the truck is running there is now output to the rear speakers at all. I would like to replace the Bose equipment with new speakers directly wired the the HU with no amps. If anyone could help me with speaker sizes and locations I would appreciate it. If there is a dedicated sub I would consider a single amp for that. Bang for the buck decent budget speaker recommendations would be great too.