Please help me identify this rear end
 

This rear end was modified for leaf springs to fit a Chevy Nova but I am pretty sure it's an Old rear end. I'm not too versed on rear end's so I would really appreciate some help identifying it.

It measures approx 62" end to end from the wheel mounting surface. Has 334 stamped on the punkin. I pulled the spring and pin thinking it was seized up but it is not.
https://cimg4.ibsrv.net/gimg/oldsmob...d3f7f4a0bf.jpg
https://cimg7.ibsrv.net/gimg/oldsmob...9ef402300c.jpg
https://cimg8.ibsrv.net/gimg/oldsmob...466a46a361.jpg

if it is olds it should have letters stamped on housing tube just to the right of the vent on passenger side!