In relation to the OP's question.
If memory serves (and this is only a rough guide) you will need to support the engine from underneath, the lower control (suspension) arms are bolted to the sub-frame, as is the anti-roll bar. For some reason I've gone blank on the steering rack, think it is same as suspension arms (can't remember) and I do believe the radiator is supported in some manner by the frame.
Think that is about it. You may find silly thing like some cables / pipes and aircon pipes clip to it in places but it shouldn't be that bad.
I can check on eLearn later if you wish.
Good luck with it though.
1999 156 1.8TS Sport Pack 3
2001 166 3.0 V6 24V Super
2003 156 GTA 3.2 V6 24V
2005 156 1.9 JTDM-Jet Sport
2008 159 1.9 JTDM Lusso
1997 GTV 2.0TS Lusso
2001 147 1.6TS Lusso