Spaced shocks? Are you talking spacers at the top of shock bolts?
Cut bulkheads 'cut down'. What does this mean??

So the shock spacing I am referring to adding spacers between the shock stand offs and nut clamping the screw to the tower. This angles the shocks and makes them become slightly stiffer towards full compression.

With regards to cutting the bulkheads down, please see attached pic. This is done to add flex to the front of the car. But please be cautious for anyone planning to do this as the chassis can bend easier. This should only be done if you aren't crashing.