[Booger]

Hey guys ive been trying to get some drawings of the chasis idea for next year, however i dont know how to use cad. So far ive figured most of the stuff out, and im getting used to the program, but i cant figure out how to extend a peice of extrusion i downloaded from the first cad library. I would really like to just take that peice and extend it 30". Can I do that? and if so how.

thanks.