I'm looking into getting a smallish run of 304 stainless steel race (held together with springs, not clamps) systems made up, is there any interest in this? I'd imagine they'd cost around £400 per set. I know there are the Chinese ones available from Sandys and Delkevic, but I thought a nice quality race system would be a go-er?

If you are making a small batch id be seriously thinking about having tappered headers. Something similar to the BDK or Swona RRSP systems and you might as well fit balance chanbers too.

On the right motor it could make a big difference.