i work for madhouse motorsports, and he have put 3 webbers in, and i like the power, the lag isnt bad... it depends on what ur plans are, they are a hand full on the dirt, in the sand they are hard to beat. i just finished a 916 all motor and it has great torque, i mean they are to completly different motors, but the 916 seems to be more driver friendly. also cluching makes a huge differance in both of these setups. we run the billet two stage in both setups with different weights of course, i havent ran the 916 on the stock clutch yet but in the webber it is night and day, they pull really hard from bottom to top.... It all comes down to what you like to do more for track and dirt riding the 916 wont get you in trouble, but lacks the wow factor when it comes on.