Selling a 4.27 fully built diff. It's slightly used, but in great shape (my track spare). It has 60% lockup. When the diff was built, the 4.27 ring and pinion were installed along with new clutch's, bearings and seals and lockup was increased to 60%. This is a full 188 case diff, not the smaller / lighter duty non-clutch 4.27 diff from an E30 318. The 4.27 ratio is my favorite upgrade for the US OD gearbox. It gives the car a little more acceleration without making it too 'buzzy' on the street. It's the perfect upgrade for track cars too. $1950 plus shipping etc. Pics to come.