na local guy sells different 1s, never had 2 put silencer in for wof so wouldnt know if they have 2 be welded in,will ask bro in law when he comes over,hes a mechanick
same but car came with them fitted so yea no point removen them, also could try muffler shop for a silencer 2 be made, mates 6inch silencer was 90buks and thats in a small town,should be cheaper in a city, trade me sell cheap cannons with silencers also