What's required in a nutshell

Essentially you have to remove your rear drum brake backing plate with a grinder/torch or sawzall (reciprocating saw) IF you don't want to remove your outer stub axle. Then our bracket, rotors, and calipers will bolt on. The ebrake adaptor allows bolt in ebrake function with excellent geometry.

Specs:

one pair of 88-94 240SX rear calipers complete with hangers (similar to late 280zx calipers but different offset and obviously newer, pad size is 25% larger than early 280zx calipers)
one pair of 300ZX Z31 rear 11-3/8's rotors ('83-9/85, post '85 are smaller and NOT the right ones), 4 lug (normally aspirated) or 5 lug (turbo) depending on your current or desired setup
one pair of our custom CNC brackets
one pair of custom braided stainless steel DOT (ie. Fully street legal DOT spec) brake lines to mate from OEM hardlines to the 240SX banjo style fittings (240SX calipers do NOT have Z like brake fittings, hence we created our custom brake lines)
one pair of KVR carbon fiber brake pads, VERY rotor friendly with great longevity and resistance to fade while providing greater than OEM braking friction, a great match with the Brembo Rotors
one emergency brake adaptor package, brackets are zinc plated, include 2 Nissan clevis pins (you retain your original two as well), and 4 replacement cotter pins

Additional Info/Comments including pic of CV and rear disk bracket installed!

240sx calipers were chosen for numerous reasons including:

Excellent function without any service of longevity issues inherent to other calipers (ie. 280ZX)
Ideal piston and pad size for balance
Emergency brake system connects easily with our ebrake (emergency brake) package
Ease of availability used via yards, craigslist, ebay etc.
the 11-3/8's rotors provide a free gain in braking by the extra 14% radial leverage present over the sometimes used 10" 280zx rotors by their greater radius to the brake pad path
larger rotors also ensure ebrake arm is easily clear of the halfshafts and swaybars, and allows upgrades to CV halfshafts if desired (***otherwise CV's will not clear)
the brackets are NOT symmetrical as the caliper has been rotated to between 12 o'clock and 3 o'clock for optimal halfshaft and swaybar clearance to allow the ebrake cable geometry to be relatively straight without harsh bends, this makes for higher production costs as left side and right side brackets are NOT identical. (some historically produced brackets, ie. Maxima etc that we...re aware of are symmetrical and as a result the ebrake cable has to be hooked up at a sharp angle, the sharp angle inhibits ideal ebrake function)
early z cables do not have a removeable end piece that the clevis pin goes thru so this attachment piece needs to be double clevised to be a "bolt on"