Leave the shortest 2 studs in to hang manifold from. Don't forget to seal them(I did them all with hitemp permatex. Once sitting on those 2 with nuts fimger tight, you can install the rest of the studs/bolts.
I looked through my old photos. I unbolted the drivers manifold and left it in place when I pulled the engine. If I remember, I bolted on the starter out of the car and set the manifold in place when I put the engine back in.Damn, hard to believe that was 14 years ago.