I've pulled countless engines this way. The later 360s had "eyes" bolted to the intake.....one bolt. I've never in my life used a grade 8 bolt. Your engine bolts are grade 5.
Not sure, but I think the only grade 8 bolts in an engine are the crank bolts, mains, rods, and maybe head bolts, and possibly the cam bolt.
Most / all other fasteners are grade 5