55.2-59 Stupid Question about placing engine mounts

[daveshilling]

This is my first time placing engine mounts and I need help with the order of operations.

5.3 LS, 4l60e, Flatout Crossmember in front, likely Flatout rear.

I got a CTS V pan to help with fitment, and i want the engine mounted as close to the cab as possible without causing any heartache down the line.

What comes first? Do I need to install the rear in order to get an angle from that? Should I install the steering column so I can shift the motor over if needed?

The mounts are custom and therefore I have some freedom with the xyz axis.

Thanks, Gents!