I just got one from the local JD dealer and the part # is M149638.

I just bought a 1979 Trailfire 440, complete sled decent shape, the sled has no speedometer or tach, it just has the ignition switch and choke no holes for the speedo or tach. Where there many of these made or did I find something special? Joe

Rich, you should have couple of pm take a look, Joe