Cross Ram carburetors

So you are telling me the intake runners are different on the intake ?
I still can't phantom the reason that two identical carbs on an intake run different jets. I only ask because I have a six pack on my car and started to run with that idea (as they are different) but for different reasons from what I know.
I would really like an explanation for this set up and if possible the pros and cons to the set up from those that have run such a set up.

SSing..Thank for your deeply no less.
Do you happen to have SS CAR ?
They truly are amazing creatures...one up this way..Montreal, Canada..that's an original one from what was told via NY to Edmonton and finally resting here ( owner passed away and then his son passed away) so it was not restored...as that was supposed to be the plan from what I gathered and now the wife/mother had or sitting in their garage...
(Wanted something close 75,000) but the original motor is not in the car...again more details, the man who has the engine is using it or West (Alberta) but dog say that if he retired from racing be would be willing to sell it to the person who has the car...as he was friends with the owner and wants the engine to go back to that car, The Hemi in that car now was his, as they had swapped engines..because of some engine problems one of the two had,I don't recall that part that well and then the guy just continued with that engine and the rest is your typical folklore..
Thanks.
MAPS