either from an MK or westfield etc? might as well try and see if there are any out there! lol!
RAW Engineering fit fireblades in the Striker so they certainly supply exhausts for them and don't just fit engines to the Striker chassis.
You could try Mark & Colin at Mac 1 as they are doing one for me.
As long as I get mine first......
Martin at MK Engineering sorted me out with mine to my spec.
Top job and top bloke.
Pat...