help

[nova123456]

I have got a nova 1.0 litre with a nice sound which have just fitted it has to ampufiers (1 x 4 channel and 1 x 2 cheannl) i wud like to use a more powerful alternator and battery. Wot alternator and battery wud fit. i wud prefar the alternator to be straight swap fit if that is possible and wot battery PLZ help

Adam