[1.6.4] Import not existing?

I have been following a tutorial and in their recipie class, they use the import                                                                import bcblocks.twoinputfurnace.InputFurnace;

When I do this however, it says that bcblocks doesn't exist, has this import changed it's name, or did it get removed, or did the person making the tutorial make bcblocks and didn't say?

This is the tutorial: http://www.minecraftforum.net/topic/1924178-forge-164-micros-furnace-tutorials-will-update-all-parts-to-164/

The tutorial is 1.6.2, did it change in 1.6.4 maybe? No results for it show on Google.