Someone suggested the RX-7 TC (DLC) which could be an option. the 24h Nurb is the last race i have to do, and i also don't really like the LM cars etc.
I did the Race with a RX-7 TC, only some minor set up tweaks, no additional parts. I used Racing Hards, Intermediates and Heavy Rain tyres only. Aids where limited to ABS1 and I only used cockpit view during the race.
My times averaged around 8:22, which was slower than the Competing Audi and Peugeot, however I did one stop less every 5 stops they did, which meant I could lose ~56seconds each stint.
Including spins and other mistakes, I finished 31seconds ahead of second place, sometimes having to block the Audi on the long straight (otherwise I tried to stay clean). The rain bug also occured a few times on loading, but I never tried to force it through reloads.
I only had two hours worth of rain during midnight, during that period I gained about 20 seconds a lap on second.
I would only suggest the RX-7 TC if you are very familiar with the track and can repeatably pull off fast times. Quickest laps in dry condition was 8:06 I think. I've listed my GT Academy times in the Sig so one can rationalize/compare if the RX-7 makes sense to use. I'm not the fastest around but thought it was a very good challenge that had me sweating the entire 24H.
The GTR R35 TC should be a good choice for the average driver.
I would have loved to do it in the R8 LMS but standards don't have the nice headlights. The visibility wasn't something I wanted to risk midnight+rain