hatchback freek

i have a jdm ls tranny. the case sticker is y59 on it, im looking to do a rebiuld on it i want to put in gear speed carbon synchros in it. but the gear speed guy has never herd of a y59 and i also called up m factory, thay said the same thing, does any one know what the gear ratios are in a y59? does any one know anything about this tranny?

motor tranny from jdmsource.ca
trubble with first and grinds 3
94 ls motor