500 cfm edelbrock carburetor...

Now that I have changed the plugs, I am on to the carburetor fuel air mixture. I went onto the edelbrock website and I did not see the jets and needles that I need. Does anyone have part numbers or direct link to the web page that has what I need to convert my 500 cfm edelbrock carburetor down to the proper size jets and needles for my stock 225 / 6 motor?