Eternal or ETS are recommended for Omegas, usually around £80 delivered for all 3 pieces, including a (rather crap) fitting kit.
Is there any recommended fitting kit to get separately in addition to a Eternal /ETS system ?
Fitting Kit is far too technical a description of a few rubber hangers and four bolts. When I fitted my exhaust system 3 years ago, I used all the bits that came with it. They're still on the car. Don't make a simple thing like hanging a couple of pipes under a car more complicated than it needs to be.
I tend to reuse the old hangers if they look OK.
I do find the clamps for the mid to tail section supplied by both ETS and Eternal to be of variable quality, so I do tend to nip to Halfords and grab a couple, for the sake of 2 or 3 quid.
Yes, I did use the phrase Fitting Kit in the loosest sense
. My point being, its a bit shit
.
The other thing worth getting is some exhaust paste, as this is often needed for cat to mid section (I always use here as a matter of course, rather than try dry first), and I personally always pop some on the mid to tail section before sliding together.