Promax Six-Pack

Okay so many of you I'm sure have heard of these guys. Currently I am about to put a Six-Pack on my 318. I have picked out everything I need but, I am not sure if I need this stuff.

I would like to hear opinions of thier products. Should I buy everything (Jet Plates, Throttle Baseplate, Metering Blocks) for each carb or just certain things? Are the Jet Plates only for the outboard carbs?

Thanks in advance and as always all help is greatly appreciated.

http://www.promaxcarbs.com/

Click on the tab on the left side titled "Our Products"