Yo dawg.. check out this website
on this page you can find your side covers, Seat two person or one person seat
www.westcoastmopeds.com i know you can find an air filter, and pretty sure you can find cables and spedo and grips..pretty much everything you are looking for
the only thing i think you will have trouble finding is the fenders...
i have a newport as well its got 3,000 miles on it and it rules
take a look
i will soon be buying some parts to get it to climb hills and reach speeds of 50mph..
oh and im deckin it out in 50's look with white wall tires haha