Just bought my first mini
 

Hi all, just sold my mint monaro vxr (400bhp) and needed something fun and cheapish, after looking at lots of vxr astras and st focus which were all complete dogs for my budget I stumbled upon a 55 plate cooper s with only 60k for the bargain price of 2500. I'd like a bit more power and it seems the first place to start it supercharger pulley, in your honest opinions is it worth carrying out that mod? The only things I'm considering doing are exhaust, filter plugs and 15 percent pulley. Will I feel a substantial difference with that or am I best to save my money thanks all