I’ve just done the 3G version - longer comment above.
No difference in the screen, and process if you’re just replacing the screen (without the assembly).
If your replacement is the screen+assembly, then probably extra steps to remove the modem and unplug the antenna. Also think there’s an extra antenna piece (http://www.powerbookmedic.com/xcart1/ima...) you may have to move across.
Pretty easy repair - 2 bits I found useful in this guide were:
1) How to get into it (removing the glued on bezel)
2) Confirmation on how to release the ribbon connectors (Some lift, some slide, and I’ve broken them before when I didn’t check/look carefully and guessed wrong).
It’s the wifi version. I’ve just fitted a screen to the 3G version.
Difference is that (if you look at the top of the picture in step 8), there’s a populated SIM card slot on the board, above that a modem daughter board you can unscrew, and plugged into this antenna leads that go to an antenna mounted on the top of the main frame.
Only difference in repair would be that you’d have to unscrew the modem and pop off the MMCX connector the antenna uses.
One problem I did have is that on my Kindle there seems to be an antenna-tape-thing at the top of the frame (https://youtu.be/-SEG4NDb2JY?t=58s - on frame directly above the top of the screen).
When I pried off the bezel, (in my case) this stuck to the bezel not the frame, so it ripped. Might be worth heating the top of the bezel before peeling it off - but apart from that don’t see what you could do.
Anyway, my kindle is all back together again and 3G both seem to be working - so not too worried.
My replacement screen didn’t come with a frame, so I had to separate old screen from the frame.
I heated the screen and managed to lever it out, but edges of the screen crumbled to glass dust as I pried the screen.
Shot of contact cleaner seemed to allow me to get the crumbled glass out of the glue layer on the frame.
Pretty sure it’s not possible to remove a screen from a frame and not destroy it.