ckovach - I'd be interested to know, did you ever try (or have someone try) to fit these and fail?....or never try at all.....
you probably did your research at the time....
Of course I'm making the assumption here...that the ones I'm talking about are the ones I bought from you.

just thought I'd check before (if lazy) I walk up to a muffler shop and say..."yeh...no worries mate - drop in replacement....just be careful - pay you $200".