finally got it done..new cybox decat with silencer, new standard intermediate pipe, and csc backbox.
took 3 hours to get the old one off, due to rust, and poor access to parts i needed to cut.
new one went on in 15 mins in total, caked all 3 joins in exhaust sealer too, but its still blowing a bit...
csc pipe sticks out a wee bit further than i thought it would, but nevermind.