Details: Working width of PK Bars & Initial cost – 9.7m $76,855, 12.2m $96,660, 15.8m $125,000, 6.1m $59,636, 8.5m $67,348, 9.7m
Each has the option of a liquid fertilizer tank, pull-behind, or pull-between.
Two variants of the air seeder bars are included, along with the original PK Bunker 65 carts, which now have the "Lizard Industries Concord" logo instead of PK. One version is designed to function with PK carts, while the other is called "Concord" and is particularly designed to operate with Casearias carts.
When choosing a tractor to pull the air seeding system, keep in mind that the liquid fertilizer option adds a 2500L tank to the bars' frame, but it also places some weight on the bars.
At this point, I still think these bars belong in the "Beta" version since there could be a few things I've overlooked. If such is the case, do inform me.
These bars are not as good quality as the enormous Bourgault and Seed Hawk seeders that others have developed for FS, and they are rough around the edges, most likely as a result of a texture revision. But until other skilled modders can come along and create higher-quality air seeder modifications for FS25, these bars are meant to do the job and cover the gap in that 6.1–15.8m seeder range.
Now that I've gone through the two modifications, I know that certain things are a little different, if not completely different, after the conversion process. In particular, the PK carts with the glitchy decals for the Chamberlain 667 option are one example. Though I'll solve this later, I wanted to at least release the mod now so that you gamers may assist me in identifying and resolving any flaws.
The log should be error-free as normal, with just one warning about the switch from cultivator to seeder in the store's customization menu. This shouldn't interfere with gameplay, but if you do encounter any issues, please let me know in the comments.
Regarding the CNH 4350/3380, now:
Just half of the FS22 mod has been moved to the "playable" stage as of right now. I've attempted to convert the 5000HD over, however the air cart works flawlessly but the seeder bar has game-breaking problems. As of right now, the air cart is its own stand-alone mod, made to function with the Hatzenbichler Terminator seeder from Hispano Modding on the in-game modhub and the PK liquid concord pack.
The specifications of the tank include:
The cost is $40,000.
Tow-behind and tow-between tire choices from Continental BKT, Vredestein, and Lizard
Depending on your seeding configuration, a detachable loading auger
Flexi-coil 4350, two colors of CaseIH red 3380, and New Holland 3380 are the available brands.
When you need an affordable Air Seeder, this is the seeder cart to choose since all of the choices (for this release anyhow) cost nothing.
Although there should be no errors or warnings in the CNH cart's log, please let me know if you have any problems for whatever reason.

TJM (Blackswan-modding) is credited.