Familiarise yourself with the different models available to you.
So you can have UK Spec EP91's which have been modified to look like a Glanza. You don't want to pay JDM tax on those, I.E. they should be cheaper because they are replicas. Nothing wrong with the replicas, the calibre and standard they can be built to they could be better than JDM ones. With JDM ones have stronger internals, gearbox and disc brakes all round.
Then you got Glanza S - The JDM models which on the surface look like your all singing all dancing models, without the turbo.
And your Glanza V - The Turbo JDM Model, which I assume is what you're after.
Someone on here recently mistakenly bought the Glanza S - Non-turbo.
Cars getting on a bit now, so check for smoke on start up, smoke on boost, smoke on overrun. It's typical for something of this age and a hot hatch.
Check sills for rust etc, the norm that you'd expect for an old car. They have plastic trims around the sills so you won't see if it's rotten at first glance.
These cars don't crash too well at all. So check underneath the boot carpet for crumples, and the front crossmembers.
Gearboxes can be getting on, check for no crunching between shifts etc.