Originally Posted by ISeeDeadHuffies
I think you could, but it sure would suck to have it turn out wrong. Not fatal to the frame though, there are always BB spacers to bring you back to 73. I hope you don't plan on doing any grinding, use the correct facing tool or have it done. This is critical.
+1 on that. You'll have problems with it becoming loose if it is not properly faced. The lockring will not be secure, and then you run the risk of of stripping the locknut when you tighten it because it will not be seated properly.