But You can do Robert Kubica's 2007 helmet I'd love to see it done by some good helmet skinner ) I found picture of helmet created for GP4, I think it's well detailed and can be used as a refference pic. But it may be too small
I have other idea for competitor for UF1 Fiat 126p! It's RWD and it has engine placed between rear wheels (almost like Porshe ). Originally it's too weak to compete with UF (~24hp) but in LFS it can be more powerful
Here are the photos :