Sambo, you need to come listen to a MK5 with a Milltek, you will soon change your mind, I use to be of the same opinion as you then saw the light 
....But Beware!! It's a slippery slope! 
Haha i'm used to the slippery slope, I find it easier jumping straight in rather than fight my way down

But saying that, i'm having thought's on keeping the mk5
fairly standard engine wise and building a mk2 track car instead

Sam