If anyone is planning to do Randy's diff upgrade, I have the finishing products that I am willing to sell at half price. I purchased everything Randy listed in his instructions and needless to say items such as the epoxy primer, paint, reducer, hardener, catalyst can only be purchased in larger then necessary quantities. So there is enough to do many more cars. The 3m seam sealer, sound deadening material, and texture coating will do two more cars, these items are much less expensive however then the paints. I'll have to check if this stuff is safe to ship, but anyone in near the Omaha, NE or Chicago, IL area (I'm in Chicago about once a month, and actually I'll be there this weekend) can pick these up.
Here is a pic of the finishing materials

Here is what the project looks like when completed.
http://www.bimmerfest.com/forums/sho...d.php?t=118143