Can anyone please suggest a source for a ready made s.s. exhaust system for my 89 2.6. Thanks

Hi Bob,
As far as I know, Longlife or Powerflow are the two most popular options for the Starion. I've got a Powerflow on mine and it's fine, seems from previous discussions that the Starion community is divided over which is best.
I haven't got any contact/supplier details for either make but they shouldn't be hard to track down with a Google search.
Good luck,
Ash.