Z3 Roadster (E36/7) Exhausts with VF Engineering Supercharger

I recently purchased a VF Engineering supercharger for my '98 M Roadster. I'm trying to decide whether to get free flow exhaust. Been looking at B&B, Supersprint, Eisenmann, and Remus.

Will it help the supercharger much considering the stock exhaust on the M is split and should already reduce back pressure a bunch?

The ideal exhaust would... add some performance, look good, have deep tone but not super loud, and not damage bumper or require bumper modification.

Are your cats in the headers? That's where I would start.

I purchased and bolted a REMUS exhaust muffler onto my 2002 2.5 litre Z3. 2-1/2" pipes SS look great. sounds deeper throaty, but not too loud at 85 mph. purchase made from Bavarian Autosport. Good luck with your upgrades. C