I'm not sure the effort would be worth the results. The ECB with the mods can turn out some decent bbq. If you want a small UDS, you could just get yourself a 30 gallon drum and build one. The results might be a little more to your liking.
Or in Pirate Talk:
I be nay sure th' effort would be worth th' results. Th' ECB wi' th' mods can turn ou' some decent bbq. If ye want a wee UDS, ye could jus' get yersef a 30 gallon drum an' build one. Th' results might be a wee more t' yer likin'.