David, I'm not sure what the requirements are elsewhere, but as long as the jet is flying at 200MPH or less, there are no restrictions on turbine thrust here.

If someone wants to accelerate straight up to 200 MPH, they are entitled to do so. I'm not sure why you appear to have a problem with that. There is no more stress on any of these aircraft at 150 MPH with a bigger engine on it, than with a smaller engine on it beyond the increased weight and loading issues of the additional pound or so of turbine.

A BTU of jet A will get you so far whether it's in a Jetcat P-60, or a jetcat P200. All efficiencies being the same.......