Yes, Shock Factory is in France, but Mike is ex-pat English and very easy to talk to. They have a UK number which goes straight through to the factory. 01858 288021
Non standard shocks, built to your spec, same price as standard... and super cheap servicing and modifications if you ever want anything changed.
Probably the most helpful company in the bike trade that I've dealt with in 40 odd years. No connection, just a very satisfied customer.
And, yes, Denz0's work looks top notch too.