Cam and crank seal

[Moose]

I'm going to be redoing my timing belt set up next weekend. All new stuff, balance shaft belt, water pump, tensioners. But i need to change my cam seal and crank seal also. I'm finding a lot of mixed info out there about changing these seals. Can i change them without much issue? I read im supposed to pull the oil pump to change the crank seal? And using an impact on the cam pulley bolt? Do i need any special pullers, for seals or pulleys?
Thanks.

[oakrdrs187]

Special tool.
A pick with a slight bend/twist.

To remove your cam sprocket, stick a prybar or something of the sort through a spoke to prevent it from moving as you break the bolt loose.