i have a rx2 with a 13b streetport 48 idas non turbo and i was wondering what is the best exhaust set up i should use?? thanks

 

the old school setup is RB header into a pair of RB presilencers, either one in front of the other or parallel into your choice of rear muffler. RB is the quiet one, back in the day they were using some sort of turbo muffler.

piping should be either 2x2" or 1x2.5"

 

That is basically the setup I have on my Duece