Thats a good idea christian, a removable silencer would be a perfect set up for someone who does alot of track days.
Do you have any pictures of how the silencer and screamer pipe are routed?

I've been toying with the idea of setting up my screamer pipe so it can be changed to flow into the down pipe on quick release flanges.

But as I have a side exit exhaust with no silencer, it might not dampen the sound of the wastegate...