You could get an apr of 6.5% or 6.9% but add about 1-1.5% onto that if you want to take out some kind of payment protection incase you lose your job etc etc.
Why buy another Fiat? Mk2s are built better but the 1.2 16v is slower than the mk1.
If its for your bird etc why not go Clio? Can get a nice 2001 1.6 16 valver for about £5k. Im lead to believe they're built well...