I had a 63cm CAAD 5 which I sold to a guy 6'5" and it fit him pretty well. Probably some used 63 Cannondales around. There are some 64 cm Treks out there, too.
I've mostly used 36 spoke hand built wheels and they hold up well.
How much do you want to spend? I think you can get a Gunnar off the shelf in a pretty big size. I have a 62cm and it's very solid.
I think BF member waterrockets races an XL Fuji and he is 6'4", or so.