It will fit as its the same system. The price difference between the 200 and 197 systems is essentially the tailpipes. The Scorpion ones are of very high quality and come embossed with the Scorpion logo. You could save a bit of cash by getting your tips off eBay. Several of our customers have done this.
Thats the outer diameter of pipe leaving the back box. As long as the connecting part of the tailpipe is for that fitment you'll be OK. For the tailpipe exit you can go as large as 80mm but you'll find most of them are around 70mm.