Not too bad. Remove the cross member on top, and it just unbolts. Getting the crossmemeber in and out is a bit of fun though. Get a really big rubber mallet.
Exactly what Dalpilot said. It really isn't that hard at all, probably took me a half hour to do. If you have an AFE Stage II intake that is enclosed, then add alittle more time to that number and alot of cuss words lol.