Technically it's not an inspection, i had no problems going to regency with my victorian r34.. they just checked the engine number. If you've got an SR20 i'm not sure how they would check the engine number against your vin.
But however, if something is obviously defectable then they'll deny you registration in sa. As what they did with my bosses bog stock saab he brought from nsw.. that had too dark a tint, they handed him a razor and told him to take it off on the spot.
btw, beautiful car i must say! Best of luck getting it here.