I think SakuraDestiny wanted to do this too, but I'll just do it now, since I have been asked if we could release FHD raws for 337-341. Perhaps you know it already, there are FHD raws from 323 on until the current episodes. Btw you can also use this guide to get the mp4 HD raws which appear every Sunday, other One Piece raws or any other Japanese content.
I get the FHD raws and every other raw I upload from Japanese P2P network. There are two programs which have the FHD raws in their networks: Winny2 + Share EX2. I highly recommend Share, it's much easier to use. If you don't know where to get it, here's a link:
http://www.vegapunk.com/share/Share_EX2_Ready4OP.zipYou just need to make sure you got several things done:
Setting up Share:
- make sure a port is freed, standard port number is 10000 (set the port number at "Settings -> "General Settings" -> "Networking" -> "Port")


- enter your line's up+down speed + disable disconnects on slow downloads

- set up folders for Cache, Upload and Download in the "Folders" tab (remove the previous set folders)
Note: This is important, Share can't download if these folders aren't set. You don't need to have files in the Upload folder though. You can also edit folder.ini to do this.
- add "ワンピース" as a cluster to search for files with One Piece content (you can remove the other clusters)
Note: You can also use "ONE PIECE" as a cluster, but I experienced that not all files have the romanized version in the file name. -> use other clusters if you want to search for other anime/other content like games/whatever


- make a NodeRefresh when you start Share ("Tools" -> "NodeRefresh" -> "[Reset] Node-system" -> "[Add] Node from URL")


Using Share:
- search with the term "ワンピース 1920x1080" to find the FHD raws (->
Screenshot)
- search with the term "ワンピース {episode number}" to find all raws for episode {episode number}
- make a NodeRefresh when you change the cluster list
- if you don't have the "East Asian Language Support" installed (
Link to ろろのあ ぞろ's guide), you can install fonts like
Meiryo to view the japanese characters, Share will use it automatically
- add the files to your download list and wait for Share to get the file blocks from the nodes (I usually get 200 kb/s+)
- clean the cache directory from time to time, I don't think Share does that on his own.
Good Luck.

Feel free to post here, if you got any questions.