You should be able to just weld them in. Get a shop to do it for like around 80 a muffler
Yes I edit my posts a lot, auto correct likes to sabotage me!
"Hp sells cars, Tq wins races" - Carroll Shelby... RIP
2012 Mustang GT Convertible
2003 Mustang GT (Sold)
1999 35th Anniversary V6(SOLD)