[maple_leaf_eh]

I've got a chance to sell the whole pile of extra mechanical parts to a fellow in the US. No terms negotiated yet, except my opening price. He lives 14hrs away, so my mind is thinking about meeting him halfway But I wonder if the whole plan could shudder to a halt at US Customs when I roll up with whatever the guy wants to buy. What paperwork or preplanning should I do in order to make this go effortlessly?