I have a 1999 GP1200. The engine was tired, only 80 PSI compression. Purchased new engine, did the swap. Runs awesome now! I followed the break in procedure with SBT's oil. I have a little over 10 hrs. on it now and it is running smooth.
The instructions were very detailed. It was pretty straight forward and easy. Very satisfied so far. I did rebuild the carbs and put in new reeds while it was apart.
Great experience.