Simply put Robbo, new rules for 2004.
For the best, as LMP2 now is competitive again. It wasn't supposed to be a mega-buck class which is what was required once those gorgeous Lolas appeared.
By my reckoning we should get about 7 or 8 P2s at Lemons this year. Lolas, WRs, Courages and hopefully (locally biased here!!) the PiR Pilbeam-Mader MP91 which I saw nearing completion yesterday at the factory.