I wouldnt have a prob with buying one with some bolt ons already done. hell cheaper than buying a stocky then adding them at retail price.... as many others have, I have modified my car plenty, and would recommend anyone buy it (if I was selling). I dont baby it either, though I do treat it with respect. as long as a car has a detailed history and been tuned by a reputable workshop (if not sure do search on forum for particular workshop) I dont see an issue. most modified f6's will be the same price or close to as stockies. if the history is sketchy or not available, then avoid it. ask to see dyno charts and if not sure what you are looking at then post it up. we'll help with info on the afr's/ tune etc. remember that an f6 can make 300+rwkw with injectors, pump, cat and tune. and if not sure on something- ask! theres no such thing as a dumb question- just getting into trouble because of not asking! go for it- happy hunting... scott