Since my pinion seal is leaking, I figured I'd go ahead and replace the posi clutches in the diff. Found the PN for them here on the board & called the local dealer. Gave them part number, & they couldn't find it. Went through the whole deal of explaning the vehicle & then the guy tells me, "oh, that is the correct part number, but it's been discontinued. I figured whatever it was you were looking for, for a GN would be." So, would I be better off finding one of the parts houses online still with these, or is there an aftermarket replacement?