hi
i have silverado 5.3 /2010 turbo
i would to doing some upgrade in the tranny its 6l80e all ready i have converter circle D stall 3300 now I'm thinking about rebuild kit i don't have any problem how much of power i need strong and fast shifting coz maximum i will make with 5.3 stock bottom 700-750HP .

i searched about who's had upgrade this tranny and i saw PATC and circle D transmission i sent email and no body answer me so i need your help to know the cost for the rebuild kit and does i will see difference in shifting or just will be good for high power .