I am in the process of replacing my ABS accumulator with the entire pump assembly removed from the 90SC. I have seen posts that mention that Priorreman.com has consolidated both the long and short nippled accumulators down to only offering the short accumulator. I see a serious problem with this. In my case, i have the long nipple version, and here is where the problem is: If you look in the bottom of the hole in the pump body where the accumulator threads into, you will notice an O-ring at the very bottom of the threads in addition to the one on the accumulator itself. The O-ring in the bottom of the pump body lays around a conical seating surface that is designed for the accumulator, when installed, to bottom out onto the bottom O-ring and the conical Seating surface in the pump body. If you put a short nippled accumulator into the place of a long nippled accumulator, you will have the O-ring on the accumulator sealing to the pump body, but the accumulator will have NO contact to the second O-ring or the conical seating surface at the bottom of the threads in the pump body. I know people are saying that using a short nippled accumulator in place of the long nippled one is working, and maybe so, but it is not seating like it is supposed to. If you have any thoughts on this, please feel free to post. Good Day to all.