Be prepared that you will loose the edge on your Comet with a silencer that is less noisy, especially should you have a MKII cam fitted.
I love loud silencers!!! they make you feel special between all these turbine like engines of modern motorcycles.
I have a Triumph Thruxton 2005 model, I do not like the handling at all, but the major reason I use my TVR when the sun is shining is this wonderful V8 burble and pops and bangs on the overrun, while the Triumph sounds like a sewing machine.
nuff said
Bernd