US 401k withdrawals

Over the years, I hadn't given much thought to my US 401k account, figuring I would sort everything out someday. Well, time whizzed by, and I'm now old enough to withdraw without penalties. I plan on living in Japan longterm, and would love to buy another property here. The US stock market is strong, and the yen is weak, but…I know that pulling it out all at once would mean getting taxed at the highest rate in the US, where it will be considered income.

Can anyone point me to information/links for advice on withdrawing US 401k funds and bringing the money to Japan — particularly on the tax implications in both countries? Or can anyone give advice based on what they learned, as they brought over their own 401K funds?

by No_Carob2670