Not sure but I believe the Super mag was the sister to the pro max and would turn up to 6750 rpm's
and the mag II had a lower rpm limit---- I want to say around 6000, but I am not sure about those numbers.....
so depending on which mtr and how many rppms it will turn. if it has 1.87.1 gears it should run 88-92 with the lower rpm mtr and 93-97 with the higher reving engine unless it has had the ecu re-done.
But then again if you are at a higher elevation and the motor wont turn to the rev limit--- all those numbers are out the window.