Nippy little car, be quicker then the Ibiza for sure. Some people mod them with exhaust and airfilters.
The Mk6 1.4 is only 78bhp compared to the old mk4/5 which were 90bhp.
Won't beat alot of cars but once their moving it's not to bad. Watch out for seat handles as these snap so take it easy when pulling them. Clutches have a habit of messing up near the pedal end, this was a recall on some due to the spring coming off the pedal.
Coil Packs can fail, this will make the EML light come and performance go. Will Missfire due to it.
For the headunit you can change to either a single DIN unit or double DIN, Autoleads do a conversion kit in which you cut the 2 bars where the unit goes in. The standard speakers work well with a small 10inch sub if you want some extra bass.