No reason to fight with home made engine mounts. Advance adapters engine mounts install easily with their bolt on or weld on design. They make positioning the engine in the optimal place a breeze! Rubber insulators assure years of smooth, safe, problem free service. Also available are some engine mounts that use all of the factory brackets.
The 460 / 429 C.I.D. Fords are a great example of this when replacing the 390 C.I.D. block design.