Save it for the cambelt.
ktec recessed exhaust, lowering springs, few other bits and bobs
Putting the money into a postal ISA
Aux belt if needed, if not then upgrade the brakes and exhaust, brembo max, ferodo ds2500 and braided hoses, yozza exhaust, doing a fanastic deal at the moment... or Recaros 2nd hand if you can get...
Daniel has a nice Daihatsu for sale