Whats the best way to set up the shocks in the rear, like straight up and down, kind of like stock or triangulate them?

 

It would depend just what your end use is going to be.

What are you looking to get out of the shocks??

Is this being set up as a Daily driver or for hard core Rock Crawling??

 

a wheeler and a weekend driver

 

As straight up and down as possible. At an extreme shock angle, the wheel travels up and down and the shock travels very little in relation there by reducing the damping affect. yes there is limited room, so stock is best.