Hello,
I am on the look out for a J15 either fully built / part built / unstarted or any stage really. Ideally J15 but interested in Vectis also.

Anybody got one going spare?

Still looking if anyone has a car or part built they want to move on.

There's a mk1 riot I started on eBay:

Sylva Riot Kit Car , Track Car, Race Car, etc

Have you tried Sylva Sportscars themselves? Currently on Facebook they have a J16 kit at 2014 prices.

https://www.facebook.com/sylva.sportscars?fref=nf&pnref=story