Blower Question

I have a 350 in a chevelle. Bored .80 over.
What in total will I need to have or add in order to add a blower.
Also, Im not looking to change any internals, just a bolt on and go.
What type of blower? I dont want to go too big, maybe six lbs of boost.

Any thoughts? Im not to knowledgeable when it comes to forced induction.

Thanks

M