Special tool needed to remove pittman arm and idler arm?

[chevybill]

I am about to start my front suspension and steering rebuild.

Do I need a special tool to remove the pitman arm from the steering box? and the idler arm?

Can I hammer and pry (carefully) these two pieces off or must I have some special tools?

What are some suggestions for coil spring compressors? I am working on a rolling chassis with no engine or drive train.

Thanks for your help and replies.