Are you looking for an e30 diff with 2.93 gears or just any type 188 diff with 2.93 gears to swap in? If so I'm pretty sure I still have my stock e36 2.93 diff lying around.
"Driving is like a narcotic, an addiction that can take over lives. It ruins people, breaks families apart, and even kills. Itís habit that needs to be fueled. Time, money, rationality, sweat, knuckle skin, and anyone who disapproves are of little importance to a driver, and are often overlooked. Hi, Iím Nelson, and Iím a drivaholic."