Which bushings from PartsNmore are you referring to? Some of theirs are flat wrong, others fit poorly and will need you to rework them to make them come out right.
The ones with flanges on the outside from PartsNmore are not for the K2: they are supposed to be for the K5 and later bikes (but fit poorly).
The K2 has 2 straight bushings, which are 1.775" long, 0.8430" ID before insertion, and must be inserted 0.200" to 0.238" below the tube's ends. Final installed ID is 0.8422". The difficult part: the tube on the swingarm is not straight anymore: typically they are flared from the oringinal 1.0435" ID, which you'll still find near the inside "step" that you can see bored inside the tube, to about 1.0460" or even more at the outside end. Often, the tube is also oval or egg-shaped, with the widest part toward the front of the tube, from years of handling acceleration and braking. So, the new bushings need to be tapered or cut non-round to accommodate these errors.
If you simply install a round bushing, at best you will have to gently ream (or hone) it until the collar can pass through it: if your arm has a straight tube, this will work out OK. If not, it will have tight spots, bounded by loose spots, and the handling will return to its loose state pretty quickly (about 5k miles, typically).
In any case, I'd advise AGAINST Honda's own bushings at this time: since about 1989 or so, they have been made of powdered steel composite. Since the collar is also steel, this makes a steel-on-steel bearing, which is impossible to lubricate, no matter what lube you try (even the Machinery's Handbook warns against this worst-possible combination). And, the steels rust together very quickly from the condensation these arms accumulate, destroying the new collar from rust in about 2 years, judging from the arms I've seen.
The parts you will need are:
1. Bushings, most preferably bronze. SAE841 bronze is excellent, 9000 series (aka SAE600) is good if you lube on schedule.
2. Felt washers, which retain the grease inside and prevent water ingress from outside.
3. End caps (Honda calls these a "bush" in their parts fische).
4. The collar.
5. The long swingarm bolt with 2 grease zerks on the ends. I usually install Nortn American style zerks in place of the Japanese ones, so the grease will actually go in...
You can see all of these parts in the online parts fiche (like at KawasakiPartsNation.com, select Honda models).
I've been rebuilding them steadily since 2005 or so. This is just a compilation of what I have seen. You are correct about the shipping here: the last 2 that went back to Canada cost $38 and $54 in shipping! Pretty steep...
