I have sidepipes on my C3. I used Hedman Headers, and like it says above they don't have the alternator bracket mount on it. So you'll need to fabricate your own (my local garage did that). No issues fitting the headers, they slotted right in as advertised. Then from them backwards (or sidewards? ) the rest of the exhaust is custom stainless steel. As such it all fits perfectly, though you can't fit much silencer under the standard side pipe covers like I have. So it is a bit loud. The standard covers like I have means your can touch the covers when the engine is running and won't burn to death. They are warm, but not burnable. If you have sidepipes without covers, then yes you will burn. No bodywork needed to be cutaway or anything for my system to fit. As such you could revert it back to a normal rear exhaust if you wish.How did this work out? Are you happy with the side pipe system. Any advice for system selection, choice of material, noise levels, problems in fitting or maintenance, spark plug access, steering gear clearance. I am considering side pipes, being a hooligan at heart, and do I need asbestos long socks? I have the Steroids rack and pinion on my 75 so might have a clash with the headers. Any knowledge? Did you have to cut away any bodywork or trim?