350 to 455

Im thinking about possibly putting a 455 into my 72 skylark, my question is are the alternator, waterpump, air conditioning compressor, power steering pump the same from buick 350 to a buick 455?

 

alternator- yes
water pump- no
air condition -yes
power steering- yes

The fan shroud is also different

 

thanks, i did read another thread asking pretty much the same question