Yeh you've definitely not got the olive joint there, looks like they've sleeved it and welded it together rather than just sleeving and clamping. But then there's a clamp a bit further back in a few of your pics which is strange, but either way you don't have the olive joint anymore.
As someone has already said, he probably means the gasket kit before the cat which is the rusty springs you can see along with the bolts etc, also between the manifold and the cat is a little metal gasket. I've replaced this on my drive with the car on stands but if I had to do it again, I'd just get the kit and take it to an exhaust place. Reason being it was a pain in the arse as everything was rusted and stuck on good and proper. Wouldn't take half the time on a ramp.
Oh and get a genuine kit, from what I read when I did mine, the aftermarket kits are prone to failing or not sealing properly.