Looking for a good condition 4:10 LSD, must be from the 6 cyl based M20 cars. Please include the year and model e30 it came from and also the mileage and price. Would prefer a diff from an automatic car. Diff should have the "S" paint mark on the top of the case as well as the s410 metal tag bolted thru the diff cover. Thank you in advance. Also interested in any race grade E30 diff that may be out there.