Check if the Exhaust is blowing? Not much is likely to change in 30 days. 
But you know that's on its way out (perhaps negotiate it as a factor on the bike price).
New set of Headers will set you back £150 or £190 (Black Widow vs Delkevic).
EDIT: That's new prices above. Obviously you could bag a bargain on these Parts 2nd hand instead (ebay).
But you know that's on its way out (perhaps negotiate it as a factor on the bike price).New set of Headers will set you back £150 or £190 (Black Widow vs Delkevic).
EDIT: That's new prices above. Obviously you could bag a bargain on these Parts 2nd hand instead (ebay).