Personally i think it\'s not worth spending even $1 going fmic in a standard TT leggy, all you gonna notice day in day out is the increased lag and maybe a bigger VOD!
However, i got a wrx piping kit (needed some modifications) and a 550x230x65 cooler and had to get rid of spot/fog lights
BUT, i know of couple ppl using 600x300x100 and they kept their spot/fog lights, again both were using wrx piping kit!
Here\'s a pic of mine,
you could see why i had to take my fog lights out, but with the bigger cooler the pipes goes under the fog lights!