Just don't try to mix and match TC and SC silencers and headers. They're not compatible.
You can fit complete systems from either.
In your opinionTo be honest, nothing black widow make is good quality. There headers are often found to make a right mess of a bikes fueling. Cbr600's and Blackbirds are horrendous when their headers are fitted. I know thats irrelevent for a can for a gs, but its a sign of there design quality, or lack of testing etc.
Much better to look at something like Fuel, a much nicer and british made alternative.
Hi has any one had any experience with the BLACK WIDOW EXHAUST system as they seem to be good value for the money.
A lot might depend on your budget however if your going to go down the rabbit hole of a full system it’s quite likely you’ll need the services of someone who knows a bit about ECU’s wrt GS’s if they also have a dyno then that would be double good. If you know of such a company their advice for best combo’s of headers/cans on your model/year bike might be guide you in the right direction, good luck mr