I've done that in the past, with different carbs that had a brass barrel, but the barrel is steel in the LA, and that would be more difficult.
There are certain aspects to doing that that can make it a PIA...
If you were really interested in modifying it just for the heck of it, you could get the control line versions venturi and drill that opening larger for more power, but you would have no throttle (obviously )...

Most pylon racers don't have a throttle anyway...