64 Dart GT manual conversion

Hi guys and gals, I am converting my 64 Dart GT from push button auto to 3-speed manual floor shift and I just found a nice Hurst shifter for it. The problem is that it requires a floor hump and I cant find one anywhere yet. Is there anyone out there that has something that I can use, or at least can tell me what I can use, or where I might be able to find it? Thanks