Oh haha you spoke to Ashley. Yeah we don't carry lots of seatposts, but we do have a lot of stems. Just depends on what kind of seatpost and stem you want. I'm sure we can find you a proper stem, but we're limited for certain types of seatposts.
Let me know what you need and I can check again in our store to see if we have it. Ashley doesn't usually work in the back where we keep all of our stuff so we might have stuff that she may not know about.