This is surely been discussed before, but with the upcming of a new season and rule revisions I thought I would ask again.

I'll use my own current car as an example. It is an 86 VW A2 GTI. So as I understand it:

- I cannot use any improved aero pieces off susbsequent A2 models (big bumper type etc)
- I cannot add any aftermarket parts (eg: Kamei parts)
- I CAN design and fabricate my own dam/spoiler

That seems techinically contradictory to some degree, but if it is a correct interpretation, I guess me doing the work is the difference. I am not even thinking about the relative merit of them speed wise etc yet.