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Well it is time for a new exhaust on my 87 5ktq.  The coller that hold the
exhaust system to the catalytic converter has rusted away.  The rest of the
exhaust is in fine shape but I have no way of mating the two parts together.
 So I have to put a new exhaust system on the car (have been waiting a long
time for an excuse like this).  What I would like to know is what size tubing
I should use. The price diffrence between  2.75" and 3.00" is small. My car
has an IA stage II box, K&N filter ,and a soon to be hollow cat.  This spring
I plan on uprating turbo(not sure what way I am going there, scott).  I plan
on using a DYNOMAX or other equivelent performance muffler.  By going to
3.00" will I loose a noticable amount of low end power, would jumping a cam
belt tooth solve that?  Please let me know soon since I plan on haveing an
exhaust system made up this weekend by an old hot rod guy who has an excelent
reputation.  One last thing, I do not mind the car being noticably louder but
I can't stand a droneing sound, does any body have any prior knowledge which
they can let me in on to save me a few bucks trying to find the right muffler