How much would that cost and does anyone make them locally?
Is an off the shelf unit not available? I work at a motorsport/race/modified car fabricators and without knowing the spec/design, @ £60 per hour labour costs you would be looking at £100-200+
KTEC don't make them anymore, I bought a cheap one from eBay which didn't fit and am waiting for another supplier from there to confirm theirs fits but have not had a response.