just use it and enjoy it
i was constantly upgrading and fucking about with my saffs, thing i regret most is not using any of them because they were always off the road being "upgraded"!!
or fucked with smashed diffs.
dont go mad, love the car and be in it as much as possible.
500bhp i had was a ball ache and just destroyed everything arround it and cost massive lack of use
p.s L1 = spark cut rev limmit = fuckin awesome noise
p.p.s i used to work with Lindsay, i.e lindsay shaw of shaw speed, top bloke and supreme knowledge