The sportka's are a great car i think.
I had one years ago with a bit of work done to it, coilovers, 300mm brakes, striped out etc...
Since owning it i have had an ST150 and a ST220 and i liked the sportka best out of them all. Not the fastest obviously but the handling is ace.
I just wanted something quicker so got rid, hence why im putting a zvh in a ka right now.
If you go for one get an SE and check for rust. I stripped one to a bare shell to scrap and only rust i found was around the rear wiper, on a 53 plate!