for an F2T?
You would do get more answers if you had the mods move this to 1gen other performance.
My personal opinion:
These Regrinds never made sense to me, i know it can change the torque curve, but don't you want more lift and more duration and not less. No matter what they do it will always be less and not more.
Logic tells me you would loose power, but what do I know.
Have I ever had one? no. Do I have a dyno sheet? no. Will I ever get one? I got something better: the carb f2 which from the top of my head has same lift as stock but more duration.
I think people get their cams reground for only 2 reasons, change torque curve or to add something to their "mod" list.
best of luck
happy HP hunting.