Anyone understand the LMP2 engine regs?

[Chris71]

Does anyone know what the situation is with restrictor sizes for cost capped and non-cost capped LMP2 engines?

[slivka]

http://www.lemans.org/wpphpFichiers/1/1/ressources/Pdf/2011/24heures_du_mans/reglements/2011-technical-regulations-lmp.pdf
See pages 41 and 42 (Apendix 1 A4B)

[Chris71]

Thanks. So does the engine have to be production based in P2 or is it just that the cost constraints mean it's not economical to produce a complete 'clean sheet' design?