front speakers sizing

[pioneer sound clio]

finally got my amplifier set up runnin the back spaekers and sub but the front speakers r still runin off the head unit , my porblem is that the fronts only allow 13 cm so wats the best speakers 2 keep up wit the sub and 180 watt speakers amped in the back

 

[Krisclio ( SQD )]

pioneer ts-c1300r. bout £160 quid. if your on a budget the high grade custom fit components are pretty good for around £60.