I done mine when I done my engine swap so it was easy without the front end being on. But I'd say the easiest way of doing it with the front end on would be to unbolt the engine from the mount find a drill a millimetre or 2 bigger than the bolt and drill the centre of the puck. I used a flat bottom wood drill. Next get your trolley jack with a chock of wood on the sump and lift the front of the engine just enough to slide the puck in between the cross member and engine mount. Put the bolt through the top of the mount and slowly drop the engine back into place. Don't drop the engine fully thou