Any guidance on my 1970 Duster plans

I'm not a fan of the early biscuit mounts. If 1 fails it will cut into your upper radiator hose unless you add a strap or I use a small chain with a bicycle tube for a liner attached to K frame and engine mount bolt. The quality of the mounts are crap now unless you buy the truck mount type but raises engine height (I'm not knowledgeable there) or go solid mount. The spool mounts won't do this.