when i did body work on my car i decided to get ride of my antena cause i never listen to the radio anyway but now i kinda want it back lol do they sell anywere an antena thats small that i can put inside my car or a little nubby thing to go on the outside rear glass like the xm radeo antenas?

 

No.

FM antennas need to be a specific length to work properly. In order to maximize the capability of an antenna, it needs to be some proportunate length to the wave it's trying to pick up. This means that 1/4 wavelength, 1/8 wavelength, etc. I'm too lazy to do the math so I forget what fraction of the wavelength the car antennas are, but they are all around 33 to 35". If you get anything shorter, your reception will suck. You might be able to pull it off if you live in a city with plenty of local stations, but that's about it.