I have always used a chain and two exhaust manifold bolts on each side........never had a problem. The engine seems to be balanced fairly well (front to rear). I have seen guys use the intake manifold bolts, but never tried that. I guess a hefty stainless steel cable would also work in place of the chain.
Buy 2 3/8 eye bolts, these can then be installed at different locations in the intake manifold to raise the engine without removing anything from the engine. Great for lazy [people like myself.