Just give them a call,, I've dealt with them several times, and they are very helpful. and I can't see why they wouldn't just sell the griddle top.
The Redneck PitKrew (comp. team)
Tiny's Bar-b-que Catering
Char-griller superpro w/side firebox
6ft. Southern Yankee
Meadow Creek Caterer's Delight 108