You will get different arguments on this one.
My 71 4x4 pickup came stock with a skinny
2 1/4 pipes going into a single 2 1/4 muffler
and tail pipe.Real restrictive looking setup.
I then changed out the muffler to a single
2 1/2 in 3" out with a 3" tail pipe,all this
with stock manifolds.Little better.Since then, I have installed vortec heads and run
hedman hedders that dump into 2 1/2 pipes that connect to a single walker dual inlet,
3"' single outlet muffler.I did this so I can
still use my 3" tail pipe.Alot better.I just
didn't want to spend the money getting another tail pipe bent for duals.Runs well
like this.Maybe in the future, I will try dual setup with 2 1/2 pipes and mufflers and
cross over pipe.
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