You can get both the radio and Hard-SPL here:
http://rapidshare.com/files/86648524...05spl.rar.html
That's someone else's link so I haven't verified the files work. I took the difficult route, going Alltel Stock w/HardSPL 1.20 -> Titan Relocker -> Sprint GPS ROM -> My Alltel ROM via MicroSD.
That's the reason why I included ExtROM and splashes in this ROM, because I wanted to get rid of ALL the Sprint stuff.