With bondage gear for the driver skin? :x
Being more serious, maybe add number plates as if it was in a racing series to better mix it on a grid, it's a GT3 after all.
If info for physics stuff is a consideration it looks like there are probably quite a lot more reference photo's for the Lotus 23B, only basing that on a quick google search for "Maserati Tipo 60 suspension" and "Lotus 23B suspension"