http://importnut.net/300zxbrakeswap.htm
This is a pretty good swap guide. I'm going to be using this to help me.
Also, contact Unisa Jecs, or project_RDM. they usually can come up with brake kits or pieces easy. and they're knowledgeable.
If you're s14 is 5 lug, all you need is:
-Front 300zx turbo/NA and Rear 300zx NA calipers. 30mm or 28mm is fine.
-Front and Rear rotors
-Front and rear conversion lines. Agency Power and SPL both sell them for 50ish shipped each or something.
-E-Brake assembly includes 2 brake shoes and 300zx 2+2 cables to mate to the s14 ones. i think the s14 can also use skyline cables? (Unisa Jecs is the best vendor for these components IMO)
if your s14 is NOT 5 lug, find s14 5 lugs and throw em on. 300zx NA rears work too. or aftermarket (ichiba, peak performance, etc.)