You will probably find Stephen Seguin's GP3 2004 IRL carset in the old downloads section of this website. No one has publicly released a 2005 IRL carset for either GP3 or GP3-2k.
Thanks for the reply although i cant find stephen seguins 2004 irl carset in the old or new downloads section. Does anyone else have a copy of it or can i find it somewhere else. Please help. Thanks.
My mistake. I replied to your query off the top of my head without checking. It seems that I reversed the carsets and was probably in error as regards their authorship, also.