David - Welcome to the forum.
Whilst I am no expert, I have done a lot of research on this myself.
Unfortunately, the devil is in the detail, so can you explain your plans a bit more?
In particular, what chassis will you be using, as this is the key.
- If you use a chassis built by an "official" supplier it is one thing.
- But if you build the chassis yourself, or get "someone" to build it for, it is another.
It is the "sum of the parts" that will give you either a 'Q' or 'Age Related' plate.
But if you end up with a "Q" then it can not be changed.
Hope that helps, Paul.
