Hi Ariel,
sorry for the late answer but I was first busy with some other tasks and had no time for GP4 and afterwards I ran into an annoying computer/internet problem.
No, unfortunately I don't have the Atticus-dat. Maybe it was in the bunch of Sebring material I recently threw away because I was a little frustrated by the lack of interest of the track builder group to make this great track available for GP4.
Even the misterious disappearing of tojepo, who had started and halfway finished (like he told me som time ago) the Sebring track contributed to my disappointment...
I understanb that GP4 is mainly a Formula1 thing but you and some others made such wonderful cars/mods of other categories inspiring me to try the same. It's undeniable true that formula 1 is the top category of motorsport but, honestly, who of us wille ever drive a formula 1 car in his life?
On the other hand it is possible to enter a formula 4 car or a GT Porsche at the Red Bull Ring driving experience offer which I will treat myself with this summer. (Remember I live a few kilometers away from the location...)
So I prefer to virtually drive touringcars, GTs and Prototypes on the nice tracks of GP4 and still have great fun most of the time.
Would be great if you could get the dat from Atticus himself and continue with the track and if you need any support which isn't beyond my abilities I will gladly contribute.
Meanwhile I'm still converting cars for the IMSA series of the nineties and race them on the bunch of US and Canadian tracks we already have.
Have a good time
Karl
PS: I removed the bear and the Elk from your great Yukon track because evrytime they appeared I got frightened and got off the track
hahahahaha