This design is based on a pattern you can find in Google using the search terms “nissan z32 imsa”. IMSA is the International Motor Sports Association but I couldn’t find anything more specific about the pattern or design.
This was largely straightforward but I had trouble transferring the design from one side to the other as it was transferred higher and to the left. The trickiest bit came when I thought I would pop a Z on the front of the car. First attempt didn’t look right at all. Then I realised that the Nissan Z has pointed corners so I added a couple of triangles and spent some time fiddling and moving and sizing and spinning everything to make the Z look better. I think it’s ended up a bit big but it’ll do.
I ended up being a bit disappointed by how it looked on track but my version looks as intended and I am pleased with that.