[2Tight]

I did a little of both. My 86 spun a #2 RB also. I had a spare take out motor with 91K. After disassembling the spare 91K motor I found old valve scars on the pistons and nominal ridging at the the top of the bores. I decided to see if the blown motor was a better candidate for rebuild. It not only had a spun #2 rb, the rod bent, the crank was toast, and the #3 bore got torn up in the process. Needless to say it was back to the other motor. I'm about 1/2 through with the rebuild and the experience has been great. This was my first Porsche engine and there are so many techniques, procedures, and tricks I've learned during the work. I'm 60 so this has been a good project...except the going back and forth from under the car.

Go for it but have a back up motor in mind if yours has suffered terminal damage.