which 3'' exhaust do i want?

i resently bought a 2 1/2" system from Jegs.
it is an all mandrel bent system and came with Imco turbo mufflers.
the bends are smooth with no kinks and heavy guage pipe.
this is a dual exhaust- no x pipe or balance pipe.
the part # is 555 30500.
it came with all clamps and hardware, header reducers.
i can't speak to the fit as i haven't installed it yet.
the total price was $202.81.
hope this helps.