Obviously, the TF 270 heads are too new to know just where the upper hp limit is for "easy" hp, but I kinda feel like the SR design might actually have more "potential" with it's taller floor and raised exhaust port.

Nonetheless, I'm sure the TF 270's will be flying off the shelves.

And Don, your motor is a good example of how good a well machined and thought out motor can run.
Nothing exotic or high maintenance in it....... Solid mid-700hp....... Can't go wrong.