[tcrist]

For your own referance, there is an engine ID "casting" number on the block. When you decipher it, it will tell you the date code and other referance data. Make sure that your engine builder at least puts that "casting number" on your receipt. It they dont want to it is no problem, just write it down yourself. It will help you later in buying parts and for referance when/if you sell it.

Also ask your engine builder about his guarentee and how he/you will identify that it is the same engine that he built for you.

Just a thought.