Not suitable for 91 se-r or even 98 se-r. The top hose is too long but will likely fit if cut off. The bottom hose, on the other hand, has the wrong angles, inlet and outlet placement, and is about 8 inches longer than it can be cut. I emailed Mishimoto and attached a photo of the reply. Total BS. All US b13 and b14 SE-R hoses are the same size.