looking for the center piece maybe a pillar, goes between the right side front and rear doors and joins to rocker panel and goes all the way up to cab roof, may be in two pieces ? A detailed sketeton description right side view will help me if you dont know what piece i need? also a rocker panel

Hi, although we cannot be 100% certain, it sounds like you are describing the "B" pillar, the vertical post at the back edge of the front door and the front edge of the rear door. On your Grand Cherokee, that is a single part which comprises the driver's door opening. You can find that part along with the rocker panel at this link: https://www.carid.com/2007-jeep-grand-cherokee-oem-exterior-body-parts/jeep-oe-pillars-rocker-and-floor-aperture-panel-2766542699.html