| Been there Lee,thats where I've got the info so far.
Quite happy to attempt this(assuming I get time) but I'd rather know what I'm cutting into and how its held together,otherwise I could end up ruining them and having to buy a further set for a second attempt.
Your right,they are not the same as other cans,even the guys who do them all the time went to great lengths to say how tricky it was-at least until they found out how it was constructed.
Thwe wackiest attempt was by someone with a huge masonry drill who just pierced the whole muffler from one side to the other and routed out what he could reach.
I know its a matter of cutting the internal pipe a few inches (1.5 -4 inches???)into the end,but where then?,thats where the other accounts differ from each other and are vague about detail
If I go ahead then I'll take photos as I do it but its frustrating to know others have done theirs already and may have the info to make thing a lot simpler for me. | 
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