honda ST1100 exhaust

My dad has a honda ST1100 and was thinking of puting on some new mufflers or silencers, whatever you use. He wanted something to make it sound a bit sportier but not overly loud. also he was wondering if he would hear the difference on the bike or would it only be people around him. Plus he wanted to see if anyone has done this to a honda ST1100 before and wanted to know how it sounds (sound clips or videos would be appreciated, on bike and off bike)

Thanks for your help

My dad also has an ST1100. He found some exhaust that he kinda liked for it, IIRC. I'm at camp for the week, so I will ask when I get back to make sure I'm not still thinking about the exhaust he found for the viffer.

ok thanks, if you could get a sound clip and ask him if he can hear it while riding or if it's just other people that hear him that'd be great.
thanks alot