|across each axel and can be different front to rear.
Check the rims for lateral runout - should be zero on perfect rims or very very small, too much will be obvious - that greatly effects alignment tools that are mounted on the rims. Needs to be checked with dial gage, on the rim area where the balance weights rest against on standard rims edge.
Check for looseness of all suspension parts especially ball joints.
Alignment specs are +/- range and shops usually set the mid of the range, each car is different depending on how you use it.
If suspension is stock only toe is adjustable on front and toe and camber is adjustable at rear. Shops usually do not do rear camber because it is up top and a pain for them especially of in range and even if both different- been there :-(
Can read up on alignment for front (FA) and rear (RA) here:
[ http://300zx-twinturbo.com/cgi-bin/manual.cgi ]
As Bernie states adjustable tension rods need to be addressed if not in spec adjusted first.
If you have adjustable front camber that is adjusted 2nd then toe last