[thorconstr]

The Shelby aluminum block is cast for Shelby by Arias. It is a 427 FE block with oiling and cooling improvements. Its stonger, lighter, and around $5,500.00. Its not original, but better! As is the Kirkham compared to the original. The Kirkham is stronger, lighter, and made to closer tolerances than the original. The aluminum block & Kirkham are a no brainer as far as I am concerned. But then I've had 38 years to think, dream, and save for this. Whatever your decision, it will be what makes you and your pocktbook happy. Best Of luck!