Talk:Lamborghini Aventador LP 750-4 SV/@comment-67.81.159.189-20171022072647

Question: Can I upgrade Enduro cars with free upgrades while the event is still active? I wanna see if I can complete the Retro collection and get three free S-class upgrades to make tuning out the SV a bit easier. Will it work, or will I just be wasting my credits?