reverse kit for 400 ex

One of my friends at school today told me that i could purchase a reverse kit for my ex do they really make them, where can i get one, and how hard are they to install.

[Juggalo]

theres no such thing. your friend was either pulling your leg or hes an idiot.

[2k2-300exnj]

lol some kid i was talkin to thought the rev kit was the reverse thing lol