i'm in the process of replacing the clutch and pressure plate in my 92 z28 with one of the Zoom High Performance clutch kits http://store.summitracing.com/partdetail.asp?autofilter=1∂=ZZZ%2DHP1675%2D1A&N=700+4294908216+4294908198+4294924927+4294925134+4294839071+4294865886+4294908022+115&autoview=sku
and as i'm taking things apart i noticed the driveshaft is aluminum.. did these come stock on any of these cars because this one looks stock and all.. or think its a swap from a 4th gen? was actually shocked when i saw it cause its one less thing i gotta do to the car lol

the 1LE cars have an aluminum driveshaft I believe

Not just 1LEs, any car with option JG1 came with the aluminum shaft.

so does that mean my cars just your average 92 Z28? how can i tell if its a 1LE

Look for the 1LE option on the RPO list.