Why not bang it on the Used Parts Request/Parts Wanted list and get Jay on the case? He's already sourced a cracking set of gauges for one member on here...
There are a few Defi gauges in here as well: Parts For Sale
hit my 4sale thread mate got defi boost oil press oil temp fuel press link unit + sard rrfps as a package listed at the bottom of 1st entry £575. Will split though.