There are several on this site: 3 foot roof raise in Northern Arizona, Millicent Chronicles; two foot roof raise, The Four Season Prime, and my own 16" raise (not nearly so well-documented as those others) to name a few. The one in AZ was a Thomas, but the other three are Blue Birds. I think vlad did a Blue Bird too but I don't recall what his was called. East Coast CB did one what seems like not so long ago, and a second one too (?). aaronsb also has done a very nice one, though I think each of these is done in the style with two levels and a transition which you said you don't prefer. Still, they'll be useful to review.
I know there are many others which I'm failing to mention.. I'm sorry!
