Thanks Dom14!

Great bits of info!

I hadn't heard of maniseal. This looks like just what I need, and as you say and a bit of exhaust wrap. It's a bit tricky getting the GQ to the shops without any exhaust to have it welded up to the remainder of the exhaust so will probably have to come up with something to bolt up at home.

I can't seem to find any extractors which have the flange welded on the end :S