source: http://www.mgexperience.net/archive/su_improvments/207908 "On HS2s and HS4s for racing we thru-bore them, meaning no bridge what so ever, on HS2 you will actually run out of room, meaning a hole in the bottom of the carb you have to epoxy up. However for street cars this would ruin driveabilty, but with race carb nothing but wide open throttle matters. On a street car I would not worry about bridge mods, if I made any mods to a stock carb for the street I would think about beveling th