I would stick with the Zonda R. The Zonda LM race car is not very fast at all. It has lower hp than other Group C and old LMGT cars, doesn't turn as well, and will just generally get ran over if you race it online. I put all of my race cars around the Top Gear Test Track, and I found that neither Zonda come anywhere near the Toyota 88-CV, Nissan R89, Mazda 787B, Suzuki Escudo, Bentley Speed 8, or Pescarolo C60 Hybride. If memory serves me, even an Audi R10 is capable of a faster lap if you're a skilled driver.