i need some help deciding what jets to use

3k head on 4k block i am using the 3K carb as it is sans pollution crap

the 3k ventury bellmouths are smaller than the 4k so im going to use the 3K primary ventury bellmouth and the 4K secondary ventury bellmouth. With my special brand of p00logic i can maintain low end torque with high end p0wah (not to mention i stupidly damaged the 3k bellmouth when taking it out)





ok here is the issue the 4K jets are bigger than the 3K, logic tells me to use both 4K jets but the 3K in my p00car used to run that little bit rich so i was thinking maybe keeping the 3K primary jet and using the 4K secondary jet

what are your comments? is this a silly idea? please halp

thanks