So we know now, such RC12LS version was used at least by Phil Davies and drivers from Finland at that Euro Champs. Another fact is, this chassis was made by Hansell Composites, known also as Fibre-Lyte. Comparing with the original RC12LS, this version is much stiffer and the weight was moved to the front by approx. 1/4".
Niki donated the special chassis and some of the parts for building this car, for showing later at Classic RC. Thanks Niki!

After collecting more parts, the RC12LS Euro Champs Special project starts now.