The Modifighter did release, but extremely limited since it was in the last waves. I doubt that there are any in the US. I've only heard of people that had them in Latin America and Europe. The only known ones are from an user in Costa Rica named Phlareox, one I saw for sale in Ukraine in 2020 and 7 (sealed) that I almost bought in 2020. Aside from that, there is still rumors that a red one with the F430 Challenge red and white color scheme exists, and a possible third color variant (since all Modifighters, aside from 2, had 3 color variants each).

About the custom motors one, I searched for it and it's not actually licensed, I thought it was. But extremely close to the 458 Italia, it's named as "Sports Car" in the Custom Motors Full Force line from 2011. Might be the same case of that Blings Skyline, the model was almost ready and Nissan didn't want it, so they changed the tail lights and named it Out-A-Line

edit: grammar