75 Dart - Stock Muffler O.D. and I.D. measurements? 225/6

Hey Guys -
I knew the muffler was the first thing that I would need to replace on my new Dart, I just didn't know how soon. Last night on the way home the muffler let go and I'm looking for a low budget quick fix until I save up to change the whole exhaust system.

I'm thinking of throwing a little cherrybomb up under there (225 /6) and was wondering if you guys knew what the muffler i.d. and o.d was. Maybe I can grab a glasspack or even a cheapie muffler on the way home tonight.

Thanks for your help!