My other car is a MINI!!!!
no FMIC will go on without considerable chopping of the bumper and under trays mate, they're not made with one, so you need to cut stuff up to get it on there.
The forge kit fits with minimal trimming, but costs a fortune and I don't really think it's that great.
You can go down teh custom route and make up your own pipes, or get the pipes from the turbo revs kit which fit fairly well, but will be visable.
Check out page 9 of the FMIC thread for a little write up I did on custom pipe routes on an A3