Great Western Honda in Kingswood have quoted my fiance $538 for the 60k service. This seems astronomically high. It's actually more than I paid for my GTI's @ 60K,...
Why don't you have the car officially inspected on site. My tech does that for audi, porsche and dubs. I'm sure if you have a reputable Honda tech, they'll check it out for you. It's not free though.
Irrespective of what engine/suspension/brake modifications you do to your Jazz, it still doesn't have a 'perfect racing chassis', let alone a racing chassis at all.
How did you find the fit of the kit? Were any modifications required to make the kit fit properly? Do you have any close ups of the joins around the car?
Take it into your nearest service centre and complain. Take on of the service guys for a drive and point out the problems. They should be able to fit so padded tape in areas behind joints to help...
If you want a lot of space - The Jazz. Can't speak for that particular model, but the new one has plenty of it. Space was one criteria on our list, so we went with the GE Jazz.