I've made some basic mods to the standard Weber 32/36 DGAV carb. In this picture you can see the bell-mouthed 'hat' which should aid air flow into the carb. You can also see that I've removed the choke flap and spindle from the secondary barrel, narrowed the legs of the auxiliary venturi and given the barrels a light polish. The walls of the carb hat still need some work. I have a more highly modded carb but this will need fitting at a rolling road, as the engine won't run with it fitted!