Replacing brakes system

[aleks81]

Hello everyone,

I just thought I had finished the restoration of my 70's SS 454 Chevelle but it seems I have a lot of work to do yet.
I drove my car this morning to an empty road cause I had a bad feeling about the brakes. So I tried to stop the car on a long road going at 70 mph and the car had a horrible response.
I'm thinking in replace the power brake booster cause maybe it's part of the problem. My car had the original one "Delco Moraine" but I don't know if its for 9" or 11". How can I be sure of the size?
Any one has replace their power brake booster for a better and powerful one?
Other thing I want to do is replace the brake pads from the drum brakes and calipers from the disc brakes. Any advice of better brands than the original ones?

Thanks a lot for your help!