You can find the download by googling 'blancopain rfactor 2'. It's the first link that shows up for me. After giving it an hour I have to say that Apex Modding GT3 feels a lot better, though I am sure some will disagree. It's hard to describe the differences (the easy thing to spot is that AM GT3 have better cockpits) so I would suggest people try them both. I will say that AM GT3 has a limited selection of cars.
Also, some people complained about the physics of the Porsche, but I haven't tried that car yet so it's difficult to pass any judgement. What I will say is that I always thought other mods and sims exxagerated the turn-in oversteer and understeer under throttle. Many real life Porsche drivers said that in recent years manufacturer has put a great effort to nullify that characteristic. I will probably give it a shot in a few days and see if AM GT3 version of Porsche is just as ridiculous as some of the mods I tried before.
As for URD EGT cars - haven't tried them and probably won't. I just don't feel like spending money on unlicensed content. If I buy content for a sim it better be properly named and designed with information from the manufacturer/real life teams.I'm not saying it's not worth the money, it just seems that a lot of guess-work went into that mod. I don't mind that with free mods, but I hold paid content to a higher standard.
BTW: Am I the only one getting a weird graphical glitch with AM GT3 BMW Z4? The car bonnet seems to be popping out in an awkward way when sitting behnd the wheel. If you have no idea what I'm talking about I imagine I could post a screenshot later, but maybe it's something common?