LET'S UP THE ANTI A BIT. I HAVE BEEN FLYING A CONVERTED ST2500 FOR ABOUT SIX OR SEVEN MONTHS NOW. THE PERFORMANCE IS OUTSTANDING. I WOULD GUESS THE POWER IS UP ABOUT 20%. IT STARTS EASILY, EVEN THOUGH IT IS AN INVERTED MOUNT. SWINGING A 16X8 AT 9000. I HAVE FLOWN IT IN TWO DIFFERENT AIRCRAFT. FIRST WAS A HANGAR 9 PT-19. MOST FLIGHTS WERE AT HALF THROTTLE OR LESS, TO KEEP THE WINGS ON IT. SECOND AND PRESENT AIRCRAFT IS A TOP FLIGHT P-47. VERTICAL IS UNLIMITED, SPEED IS SCARY. RELIABILITY IS VERY HIGH, AND THAT IS A BIG PLUS FOR SUPER TIGRE USERS.