I think you'll find your cheapest alternative is to find a freight forwarder
in the area near the parts in Michigan. If you can get them to the loading
dock, they'll wrap them and strap them to a pallet and put them in the next
18-wheeler headed west within their system. You can pick them up at a nearby
loading dock, or have them delivered to your house.

When I moved from Alaska to Maine a few years ago it cost about $1/pound; I
would think that shipping half the width of the country is going to be a lot
less than one and a half times the width of the country.

Another cheap alternative: Anything that can be fit into boxes which suit
the specifications can be sent by parcel post, third class U.S. Mail, for as
little as 50 cents per pound. The closer you can get the boxes to the
70-pound limit, the cheaper the rate per pound. Both methods assume a
certain level of involvement at the shipping end, or a willing seller there.

Hope this helps.

Ed Carroll
87 Weekender