I'm happy I asked....I saw a dragger Muffler on ebay designed for the SLk with square tips.

I had headers and regular dual exhaust on my old 79 vette with the 350 L82 and I loved the sound.

I'm just looking for a subtle throaty sounding exhaust for the Crossfire.

I think I'll be adding headers to my 3.5 Altima...For what it is, it cranks!

Thanks for your input