flex pipe

I got the idea from these very forums and all the sick exhaust setups I have seen posted here! I threw some stainless steel water heater flex piping on the end of the stock muffler and added a little 2 stroke Briggs and Stratton muffler onto the end of it all! In the photo's and video it is duct...

anybody know if this would be a good exhaust for a hausheng?it says 1'' wonder if it would fit snugg over the stock 7/8'' pipe? http://www.ebay.com/itm/1-1inch-corrugated-stainless-steel-tubing-csst-flexible-gas-tubing-per-foot-/140621600072