Shipping Car Parts to the U.S.

I need some help from the community. I need to ship a car front bumper and side skirts from Okinawa to the U.S.

For context, I’m military and shipped my car to the U.S. but I had to take off the body kit because it was too low to the ground. The movers already came and got my household stuff so I don’t have that option anymore. I went to USPS, Sagawa and Yamato and they all said it’s too big to ship through them.

Anyone have any recommendations of ways I can ship my body kit from Okinawa to the States. Also, I need to find a box big enough to fit the parts. Know any places I can buy a box big enough? Any advice would help!

Heres the measurements for anyone wondering.

Side skirts
L: 79 in
W: 4 in
H: 17 in

Bumper
H: 22 in
W: 10 in
L: 69.5

by Top_Kaleidoscope_591