Exhaust for a 1973 Duster 340 (Pics Included)

Hey guys!
I am buying my very first muscle car! Been wanting one since I was 5 and now that I'm 26 I have the money! I'm so excited I can't stand it. Five more days... I just can't stop looking up youtube videos!

It's a 340 wedge but I understand the wedge makes no difference but was just marketing? Or it does have some slight variation.

Anyways, about the exhaust. The car comes with absolutely no exhaust and I have no real idea of what I'm doing. I'm in Texas so I am unaware of any laws that I need to be aware of. I know I don't need to worry about emissions but what about loudness? Are there any kits specifically made for the 73 Duster? Any tips or ideas of what I should get? I've never done this before and so this will be my first project. To get it street legal I just need the exhaust and a few bulbs.
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