This is what I know about the Musgtang.

There were three body styles available a
a two door hardtop and a two door convertible.

The 1965 had a choice of 4 different engines
They were as follows:

A choice of four different engines.
200 c.i. -120 h.p. w/9.2:1 compression and a one barrel carburator.
289 c.i. - 200 h.p. w/9.3:1 compression and two barrel carburator.
289 c.i. -225 h.p. w/10.0:1 compression and a four barrel carburator.
289 c.i. - 271 h.p. w/10.5:1 compression and a four barrel carburator.
were three body styles available a
a two door hardtop.

Stock

Stock