You are getting a lot of confusion in here. When people say "track crank" they could mean a whole bunch of different things. Generally they mean a crank that has only one chainring so that it would be usable on a track bike. There are lots of track cranks under this definition with 130 bcd. It doesn't make them a road crank just because they have 130 bcd. For example you can get a chainring that is 1/8th inch with 130 bcd. This would never go on a road bike. That said, it seems like you have 130bcd single crank. 130 bcd is also the bcd for a standard road double. The only reason you may want to avoid getting a "road" chainring is that they often have ramps to improve shifting between chainrings which is not desirable for a singlespeed or fixed gear bike. The best thing to go for would be something labeled as a 130 bcd "track crank". Since you already have 1/8th chain it doesn't really matter whether it is 1/8th or 3/32.