Try Dennis Carpenter. They're located in Charlotte, NC, so the shipping won't kill you. I picked mine up in person, & the guy there took me back in the warehouse. There were tons of body parts back there for all models. It's a good bet that DC supplies the other guys anyway. They have the ribbed pans for YOUR pleasure
On a side note, there was this sweet cobra in the parking lot. I'm sure it was a replica, but it made me forget about the EB for just a sec. I should've asked the guy if he'd trade me straight up...