No one has mentioned the fact that it sounds as if the original engine isn''t in situ. Regards the fact it may have been tracked, what of it? You know what these were built for!!!!!!!!
I have a full termi system for 999 (on my biposto) if it fits and you were interested (I still have the original exhaust and would just put that back on as I plan to sell the 999 biposto this year)
