It depends on how its being installed I think. Is it in a 48" single base cabinet or are you try to bridge the drain board across multiple base cabinets? The less standard the install the better off you will be having it on site so they can visualize it. I'd err on the side of having it on-site if you can store it until its installed.

I gave my sinks to my cabinet maker.

I'll ask him if he wants them. I just worry about it getting damaged. Stan I'm installing drainboard ledge over the trash can cabinet and the remainder over 36" base

Because you're installing it over 2 bases (sink + trash), you should probably have it on hand for the cabinet maker because he/she will need to modify the two sides where the sink crosses from one to the other. It's not a big deal, but it does have to fit and the support be sound. Alternatively, there are online dimensions and illustrations at Kohler that are quite good. Ask the maker what he/she prefers.

We ordered our sink from Amazon, so it endured quite a bit of shipping. The packaging from Kohler is very sturdy, so that shouldn't be a problem. We did have an issue at installation where the two long sides bowed in a bit at the top center so the cutting board and stuff didn't slide the length of the sink - it pinched. We discovered this after it was installed by the granite guys. They came back and fixed it by gently wedging a padded 2 x 4 between the rails until the original shape was restored. It sounds scarier than it was, but it's better to check for straightness before installation. It's a great sink, worth all the trouble!