artic

Going to be putting th engine back in the car(from the top) and was woundring the safest and best way to bolt the chain the engine.Is it safe the bolt in the intake bolt holes the heads??? I would like to try to put the engine and trans in at one time?? but im not sure where to bolt from.Or if it is even possible to put the engine and trans in at one time(bolting form the heads)? Any tips i would like. thanxs