So basically you didn't look at the link, because the castings -which, again, are new- are part of the safety cell. They are not the rear extruded rails. If y

So basically you didn't look at the link, because the castings -which, again, are new- are part of the safety cell. They are not the rear extruded rails. If you had specified an adhesive when you first wrote the comment, sorry- I managed to not see it. I don't know of any "steel reinforced epoxy" besides JB weld (which generally should not be used on anything bigger than a lawnmower), but it and actual 3M vehicle adhesives[1] are a full 10x weaker in shear and 15-20x weaker in tension that plain boring 6061. [1]: https://multimedia.3m.com/mws/media/1467016O/07333-irsa-technical-data-sheet.pdf https://multimedia.3m.com/mws/media/1467016O/07333-irsa-tech...