The JDM L3 5-speed transmission is identical to the USDM L3 Si 5-speed. The only difference is the optional LSD, gearing, and the axle seals.
Some JDM L3's came with an optional Limited Slip Differential. You can identify these by simply looking through the final drive of the transmission. If you can see a large pin bisecting the bore of the final drive, then it is equipped with a standard open-type differential. If you can see clean through the bore of the differential with no obstruction, then you have found a rare LSD equipped ZC tranny.
Originally, the LSD equipped transmissions had "LSD" stamped in ink on the outside housing. However, given the age of these transmissions, don't rely on this method of ID. Serial numbers are no indication of year or gearing.
Because the JDM L3 "ZC" tranny was paired with a 1.6l DOHC powerplant, it was designed to use the larger "Integra sized" inner CV joints with the 40mm splined shafts. The bore in the transmission casings is the same as the USDM L3 transmissions, so the outside diameter of the seals is the same. However, because of the larger caliber splined axle shafts, you will need the larger inner diameter seals.
Here are the part numbers for the seals. Your local Honda dealer can order them.
AXLE SEAL PART NUMBERS: