make sure you use High tensile washers. mild or stainless steel will compress and you'll be in a spot of bother then. using washers to space them out is slightly dangerous to begin with lol. Make sure you torque up to factory spec and then a day or two later torque them up again as washers even high tensile are not always perfectly flat (wouldn't hurt to use a little blue loctite either).
N14 SSS, Ti and Q with the 2.0L Calipers are all more or less the same afaik.
I put N15 series 2 sedan 1.6L calipers on my K11, they were lighter weight than the n14 from memory lol