I HAD A TCI SUPER STREET FIGHTER ALSO, SEEMED LIKE IT WAS WORKING OK UNTIL I DECIEDED TO GO TO AN EDGE CONVERTER, THEN I REALIZED THE TCI HAD NO TOP END, BELIEVE IT OR NOT, THE EDGE CONVERTER GAVE ME 500 LESS RPMS AND 1/2 SECOND FASTER THROUGH THE TRAPS AND WAS STILL BUILDING SPEED INSTEAD OF RPM.. 612 HP SHOULD RUN 10.50'S EASILY WITH YOUR SETUP.. I THINK YOU HAVE THE RIGHT SETUP AND GEARS EXCEPT CONVERTER.. OPINION,, GOOD LUCK IN 09