i got the casters (im lazy and knew i would never get around to doing it myself)and heat diverter with mine..never used a guru on it..seems to hold temps just fine on its own.
I also modifed the charcoal pan so it will hold more charcoal (expanded metal walls all around it)
Extended Backwoods Party
Weber 26.75 inch Kettle
& Summit Gold gasser
Cypriot Grill & Optimal Automatics Party Que