dual exhaust hanger location?

my car came from the factory with a single pipe. i have the tailpipe hangers but im trying to also put a hanger by the muffler somewhere. where the heck can i mount my hangers? any advice would be great.

if it makes any differents im running a 318 with manifolds and some exhaust i bought off craigslist for 100 bucks it has the dart tips on it.