i know it seems so large i agree with you but i had a 650 on it, def to small and then put a 750 on it and it ran its ass off, then i did some more upgrades and it lost 350 rpm top end so i slapped an 850 on for experimental reasons and i got the rpm's back and it has never created so much power. so by numbers i should not need anything close to an 850. but the car wont have it any other way. i asked a good friend what he thought i should do and he said that if will take it and doesnt stumble and it creates more power than use it and dont ask questions, and he has been drag racing for years.