Yes! Not a problem. All brands of magneto need parts to change inside to switch the rotation. WHICH parts and the actual cost varies a bit between the brands.
When it comes to Super-Mags or Sprintmags...if we're servicing it, a rotation change is free. If we're ONLY changing the rotation, the charge is $90 and that covers the cost of parts and labor. The needed adjustment and an output report is included.
Other assorted tricks and their prices can be found here:
http://www.fuelinjectionent.com/menu2.php Thanks!
Spud