I fitted stainless Armours pipes to my Shadow, 12 years ago,no problem, I flanged them and they fitted just fine. But... where the two pipes join I think the angle is all wrong. This was pointed out to me by another section member and I have to agree with him. I have a very very old set of pipes which have been rechromed once and I got them in 1980, so they may be Stevenage vintage, there is a much genter blend of one pipe into the other, these are also a perfect fit. The stainless will go straw coloured over time and can be difficult to get back to a "hard" shine. I have also noted that for stainless they stain quiet well i.e burnt on oil leaves a mark, waddaya mean Vincents don't leak...
Jim Burgess