Sorry I had never seen this before. Given the post is a year old, I doubt you really care anymore, but I do know of the cars in Miami. I’ve met the owners in the past but I don’t have contact info to get for you.
I have seen the cars at different events in the past in the area. The yellow one actually is just a couple of miles away from where I live. Having said that, I’ve had the chance to look at them a few times over the years and I’ll just say it’s not my cup of tea. Most of what’s on there is “decorative”. For example, the nitrous bottles, in the yellow car at least, are there for show. They are not hooked up. They are there to “look cool”. The cars are clad in LED’s as well. My point is that, I would not really feel great about the splitters they have on there. I could not vouch for the functionality to be there.
Here is another video of the cars in the video you showed me. Just to give you the idea of the work done on the cars. Again, not my cup of tea, but to each his/her own……
[video=youtube;QJ_kJlaKj8M]https://www.youtube.com/watch?v=QJ_kJlaKj8M[/video]