LMP1 Le Mans team personnel size query

[mynameissport]

With Le Mans 24 Hours 2010 coming right around the corner, it brought me a strange but interesting question. I always wondered the comparision of the number of personnel in LMP1 teams say comparing the factory teams i.e. Audi, Pegueot and Aston Martin Racing to the independent teams i.e Drayson Racing, Rebellion Racing etc.

I tried finding out the answers but had little success only Signature Plus had the answer with 40 personnel according to their website.

Any thoughts or ideas.....