FFX made a good one a few months ago, loads of liveries for it too. Just go to civil jets page 4 (here). It doest have a panel but you can get a decent one here too.
The textures can be found on avsim.com (just search '727 american' in 2004 section).
Sorry its not all in one package, but sometimes thats how things work. each package sould be easy to install, if your having trouble just come back here