Okay thanks.
I favor the OS 1.40 for my powerplant.

Does the Impact have a chin cowl simmilar to the Integral? Is access to the inside of the plane similar to the integral? The pipe floor for the integral was managable. Would installing the pipe floor in the impact be similar to that?

A guy I fly with has one and I really like it. He is using an OS 1.60 in his. Plenty of power for the Impact.
How about something like a Saito 1.80? I have one of them in the hanger

Carl