i have come across some stainless exhausts for erst but sadly they are unfinished and require the flanges putting on either end, i've found the turbo end and for various styles of turbo but can not find the flange that attatches to the head side and wondered if anyone knows of anywhere/one that sells these or where the likes of autospecialists get there's i'd be most greatfull, and before someone says to go local engineers i've not got enough to make it worth while

 

longlife exhausts in cardiff mate they just need a gasket to use as a pattern