the guide will give you a rough idea, its the same just a bit harder to get the 182 out and in due to space.
roughly....
unbolt 4 subframe bolts, unbolt the gearbox to subframe mount, unbolt the dogbone mount
remove the cat
lower the subframe down on a jack, undo the pinch bolt on the steering columb and the subframe will come down with a bit of a wiggle here and there!
it will need dropped down a lot to get the manifold out but it is possible, keep an eye on the PAS pipes dont want to stretch them!