Thank you all for the replies!
I'm thinking of taking a look at the car and seeing if it's a rust bucket down there to see if it's worth it like Nonamedude says. I am in the south now so rust isn't as prevalent down here but you never know.
I was unaware about the potential length difference between the wagon and sedans so I'll have to do some measuring as well. If it's not too much, I may make it work if the mounting points align.
Finally, with the tips I was thinking the same as Max Capacity, cut off my tips and clamp them over the other. Or see if my muffler is salvageable and if it mates with the outback.
Thanks again for your input!