I have an essentially new guibo for a getrag transmission. I put in on the car last year - it's seen one season of track and has NO signs of wear or cracking.
New these are $85+, looking for $40 + shipping, OBO.
1992 BMW 325i (CHUMPCAR #296 - build in progress)
1992 3.0L M52 325i (ex-daily driver - track car only)
2002 330Ci (ex-daily driver - sold!)
Check out my e36 track car build