So I changed my setup a bit. I removed the 2 Swiftech MCR320’s and replaced them with 2 PA120.3’s. I added 6 more Yate Loons for push/pull on the rads. I switched out my Swiftech Storm Rev. 2 for the Apogee GT for now. I added a PA120.1 at the inside rear of the case and put the NB/SB on their own loop with a new pump with Petra’s top. I switched out the DD 680i block on the NB and went with 2 MCW30’s as they are less restrictive IMHO. So now the CPU is on its own loop with a res. The NB/SB are on their own loop with a res. The GPU’s are on their own loop with a T line. I was able to mount the GPU rad with the barbs facing down and this cut out a lot of tubing. I actually added a loop and lost some tubing, lol.

To fit the PA’s in the 343 you have to drill out the 4 rivets on the top plate above where the rad mounts in order for them to clear. Nothing to it, 5 minutes total for both sides. The only thing I do not like about this case and really it is no big deal is the lack of a slide out motherboard tray. This could be solved easily (by me at least) by purchasing a slide out Li Li tray and fabbing up a complete new rear panel for this case. I would remove the center divider all together, mount the PSU’s side by side on the bottom. The mother board tray just above them in a horizontal position and there would be enough room to mount a double or triple rad horizontally above that. That would make this case about as perfect as you could make it IMHO. 3 tri rads all mounted inside the box, what more could you ask for!

YRMV