You mean something like THIS
merged with a UDS?
I don't know enough about the tandoor oven, but seems pretty tough. The whole idea behind a UDS is way different than a clay oven. Or am I misunderstanding you?
18.5", 22.5" OTS
Large BGE (chambersuac's)
The Fiery Furnace (chambersuac's)
Big JT's Smokin' BBQ Competition Team