I found someone who also put them up on MEGA, but unfortunately not all the episodes are there for some reason.

<a rel="nofollow" class="external free" href="https://terribletvshows.miraheze.org/wiki/File:One_Piece_4Kids_Dub_Complete_Download">https://terribletvshows.miraheze.org/wiki/File:One_Piece_4Kids_Dub_Complete_Download</a>!