94Yellow50

Hey so i have a 94 Auto 5.0. I am going to be doing gears in the near future and had a question. Iwas thinking about going with 3.73, but couple friends at school have pretty much talked meme into 4.10s. So the question is, I have looked around a little and all i can find are the speedo gears for up to 3.55s. and if I go with the 4.10s does anyone know what gear i would need or if there even is one...any help would be great. thanks