Did this over the weekend. The "S14" one is an S14 subframe with Z32 uprights and the traction rod extended 6mm. The "S13" one is an S13 subframe with S14 uprights and stock arms. The zero height refers to a lowered ride height with about 1/2" fender gap. Positive toe numbers are "toe-in".

All you assholes that say that there's never any tech on Nissan Tech, here it is. Suck it!

Look for a thread on subframes soon.