When installing the SKU# 992 solid motor mounts you will need to keep everything loose until you have everything in place and all bolts and nuts started. You must loosen your transmission mount. Then install the motor mounts one side at a time just starting the bolts (keep everything loose). Once you have all bolts started you can tighten them, draw them in evenly skipping from side to side. Once they are tightened you can then go and tighten up your transmission mount.
Note that these will only work on stock or aftermarket k-members that are designed to bolt on stock style motor mounts. They will not work on aftermarket k-members with the motor mount bushing stands welded to the k-member.