the spline will fit for both. the only difference when you order the clutches will be the throw out bearing.
other than that the clutch kits are the same. aslong as they are the same size clutches.
if you read an exedy book (or maybe the website) they break down the parts that you get in the kit. they also give you measurements on what splines the clutch disc has etc. the other cool thing about the exedy book ('07) is it has a picture of how not to bed your clutch in. the picture is ueo drifting in his 86
they also tell you what spigot bearing your supposed to use.
the only thing that gets me with exedy aus, is that you only get the plate, clutch and throwout bearing in the kit.
all the exedy clutches i have gotten from america and japan come with the spigot bearing/bush and also a little plastic clutch aligning tool.