[Enginetime]

After building many FE;s with 30+ year old blocks I can tell you I've found many NOS "perfect" blocks to have issues from hairline cracks and numerous other issues that take a lot of time to fix!!!! Do yourself a favor, buy a new Genesis (or other). The Ford racng is a Genesis, they cut a deal over a year ago but supply and demand kept them from the market. The new blocks have mods done to beef up the areas prone to cracking on the 427's and more.
MD