shock mount

[skip99]

51 chevy truck, 10 bolt posi 342 gears..

I am at the point of doing the rear...any suggestions as to where to mount shocks?
1- both to the front, frame
2- both to the rear, frame
3- both to rear cross member(what angle?)
4-staggered.

both to front or rear frame is easiest, and if it really does not matter, then how far in front of rear end should I attach? or angle?

[droppedgmc]

Here are some on a 54' that I did