Right i was bored at work today and been looking at what to do next to me car. Iv decided against gettin 2.0 engine as prob not worth the hassle and having an unknown quality of engine in my car when mine is low mileage and i know its been kept well.

Iv got full exhaust (no decat), full induction, cams and pulleys and looking at do next before gettin it mapped.

1st was - lightened flywheel. Iv read few things on these and wanted to know if it was worth doing. Can i get mine lightened or does it need be replaced? As it revs more freely, im guessin revs will drop easier so may av trouble on hills and i will need keep revs up when changing gear?!? Can get mine lightened for £60 at autosprint in birmingham.

2nd - CFM's Lightweight Crank and Waterpump pulleys. As above are they as good as reviews say bout allowing car to rev more freely and helping acceleration. Can get them imported for under £100 from CFM.

3rd - Alternator pulley - as the other pulleys have been changed is this worth swapping or wont there be any difference if not revvin past 8k revs.

4th - gettin a sports cat/larger flexi - is there any benefit to swapping these parts from the std st170 parts iv currently got or are they not worth the money unless i get them cheap 2nd hand?

5th - Engine balancing - worth doing or not on an n/a car? £85 at autosprint.

Also is there any down sides or potential damage that could occur from above mods.

All in all is it worth doin to lighten parts up/replace with lighter parts?

Thanks