Engine Shock Mount Replacement

[Skymaster337B]

Does anyone have any experience changing front engine rubber mounts? My question is: can I get away with not disconnecting everything (oil lines, throttle cables, etc.) by only lifting the engine high enough to remove and replace the rubber mount pads? I heard the bolts will not line-up very well unless the weight of the engine is supported, so are there any trade secrects on replacing the rubber mounts?