Mike,Geert,
I know Claude Dubois and the only mecanic who, I believe, is sill active on racing and vintage cars is Fred Martin (mobile 0476 43115).
He is the one who reconstructed my Mexican block 302 with Edelbrock head an IDA48 Webers.Very powerfull and reliable make (for road and track).
He is more specialized in engines but also works on cars.
Noter however he works in his own house garage and has not a lot of space to work on the cars (it takes some time depending on previous orders).
You can always call him with my regards.
Fred