Now you're asking!
I think "Sluff" bought the last ever pair of MC18 pipes off Jha (so they say!) some 3 years ago, if my memory serves me correct, so the possibility of finding a company with MC16 pipes left in stock is going to be, shall we say, extremely remote I think!
All the major Japanese companies made them though (Jha, Ethos, HARC Pro, etc.), so maybe it's worth an e-mail/fax to some of them to see what they have out the back of the stores?!!!
Although quite different, I'd personally be inclined to look at a set of MC18 pipes and modifying them to suit. Maybe TYGA would sell you a set of SS MC18 pipes in "kit" form? I.e. ask if they will sell you all the cones and brackets so you could mount them/weld them yourself.
I inderstand that "Jeff350lc" (I think!) has a set of race pipes on his MC16 though, so maybe he would consider letting someone (like Swarbrick or Lomas) use them as patterns for some custom pipes?! "Cost ya tho!!!" :D
Andy.
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