yo i jus got a brake kit from a 300zx. n i was wonderin if the brake lines are bigger than the ones i already have..

 

You need either a set of custom brake lines with 300ZX caliper fittings and 240SX hard line fittings, or the body-to-caliper lines from a 300ZX (that consist of a short hard line and a short rubber line). While it is possible to use the 240SX brake lines with the Z32 caliper, it is too unsafe and could be potentially dangerous to drive on. The stock 240SX brake line relies on a 10 mm banjo fitting at the caliper along with brass washers, to create the proper brake line seal. On the 300ZX caliper, Nissan relies on an inverted female flare with the appropriate male brake line flare to seal.

Taken from a Google search. Search dude.