Thanks.
I have found some tbSTI sedan mufflers for sale which is promising, but they are not wagon mufflers and I believe there is a difference but I'm not 100% what all the differences are? (just tip length?)
I found this page for the differences between sedan and wagon mufflers:
viewtopic.php?f=55&t=28679&hilit=sti+tips+length%23p321585and there is a link in post#2 to another topic viewtopic.php?f=68&t=22363&p=321585&hilit=sti+tips+length#p321585
but every time I click on this it asks me to login and won't take me to the page!
(This seems to happen to me alot on liberty.asn.. I have tried Chrome / edge / home and work computers.. but still the same... login required and won't take me to the page I want which is a bit frustrating)
I am interested in the sedan ones for sale as I imagine tbSTI wagon mufflers might be hard to come by and I would like to get this done sooner rather than later. However they are also in a different state, so might not even be possible altogether. Will call some workshops during the week to see if they know of any suitable mufflers.