subframe identification

[31_plymouth]

I am trying to determine what kind of sub frame I have.
Here are some details: It has Drum Brakes, Riveted upper ball joints, and a power steering pump with this number on it: 5691676 below that number is the number 38. The motor mounts are on the frame. So my question is, Are the coil springs for a 6 cylinder or a V8 and is there enough information to tell what this sub frame came from.

[Mark]

Wheres the control arm rebound bushings located, lower arm, front, lower arm rear, or on the frame?  Do the coil spring tags have tags on them?

[31_plymouth]

The rebound bushings are mounted on the lower control arm on the front side. the coil springs were media blasted and there is not markings on them. I measured the sway bar and it is 11/16 of an inch, I don't know if this is a clue. thanks

[Mark]

Its a 69 Camaro (or 69 to 73? Nova) subframe.  Does the passenger side motor mount have a single bolt hole in the middle of the top of the mount (6 cylinder), or does it have a pair of bolt holes on the front and rear face of the mount where the motor mount bolt passes thru and no hole in the top face (8 cylinder)?