Hi mate, i have just read your post about going k04, i went k04 myself about four weeks ago and all i can say is go for it. You will not be disappointed. You should be safe on the k03 lump depending on map. To put into comparison on how quick it is now, i came 3rd overall at inters in mk5 + mk6 class and 2nd 0-60 fastest and that was over the whole weekend. Hope this makes your mind up. 
I came 2nd last year :lol:
