Jessica - I have an Inglese intake with 48 IDA's set opposed - I believe. All fuel connections are between the carbs as shown below - is this what you mean by opposed? Also, whats the theory behind inproved throttle response with this set-up vs. running carbs in the same direction?
BTW, I like just happened to like the clean look of inset fuel lines - I guess it's better to be lucky than good sometimes!