The EB one has one big cut under the center big intake port and nothing else done to the piston and sleeve. I don't know if he cuts the crank any but he does put the epoxy ramp in the center of the crank.
The speed one has some big cuts in the side of the intake ports. There is a thread that someone has on here that shows the internal parts of the speed engine.
I think that the speed one is just as fast as the EB engine but I have heard that you can't get parts for the speed engine.