In the middle of upgrading the the NP231. The input shaft has to be replaced to mate up to the 6L80 transmission correctly, that's really just a R&R. In an effort to keep driveline angles to a minimum I replaced the current SYE with a super short SYE from Terraflex. This will allow my driveshaft to be about 3" longer. During the disassembly I dropped the debris magnet on the ground and it shattered... so Now I'm waiting for a replacement. Sucks when a relatively easy project gets sidelined by something like a broken magnet. I took the opportunity to clean up the case and paint it "cast iron" gray.