Stick to the wheels and caliper paint, you'll be ahead on the budget still.
The best I could do for a Tiguan BBK was a picture of a Tiguan on a hoist behind a Golf fitted with one. :P
Attachment 37995
In all seriousness Harding had a Mk1 Tiguan up to stage 3+ from memory that was lapping decently on a Porsche track day so I am guessing it would have been wearing a very good set-up.
But $$$.