For the lower front.
There should be two bolts that allow you to split the frame for engine removal. Take two thin plates and bolt it to both sides of the frame using two longer bolts. Then make attach them to a tube that comes down following the frame just a head of the frame. We could make you one of these using a CB750 we have in the shop as they are very similar.
For the lower rear, remove the center stand and make a braket that replaces the center stand (we can provide this one as it is the same as used on our CB750
For the two upper mounts use frame clamps which we can also supply.