Today my mini man cave was finished. I now have a big enough shed to set up my two engines and begin rebuilding them. However, before I can put them on my engine stands I need to know what size bolts I need to attach them to the stand. Obviously I can determine the length, but I need to know what thread size (spacing) and width /thickness (ex: 15mm etc.) of the bolts. The engines are the stock duke and 2.8. Any help would be appreciated.