I appreciate the info. I was looking for a spare one, hopefully used at a discount. I have a new spare 5.8 block and set of new cylinder heads that I purchased at fair prices a few years ago. I also have a front cover and earlier Cobra valve covers for the 10mm sprockets. I noticed that the 5.8L blocks part number DR3Z-6010-A are on Tasca Ford's website and they are listed at a steep discount with the price being $2541.50. They used to be roughly $7500 retail list price with a discounted price of around $5500 if my memory serves me correctly. Unfortunately the cylinder heads are now very expensive on the website with these items now being roughly $5500 or $5600 depending on which one you want.