NathanaelBC@NathanaelBC I'm not sure what all is offered from Massdrop. However, Lamy 2000's can be purchased from most retailers such as Goulet Pens, Anderson Pens, Jet Pens, and many others in lots of sizes:
* Extra Fine
* Fine
* Medium
* Broad
* Double Broad
* Oblique Medium
* Oblique Broad
* Oblique Double Broad
I don't own a Lamy 2000, however, I've tried a friends and also had a chance to try a EF, F, & Medium at the Lamy store in San Francisco a few months ago while on holiday. It does tend to be a bit more broad than the corresponding nib size in a Lamy Safari/Lamy Aion from my experience and from what I've read. I've seen some really great deals for 2000's on /r/pen_swap lately as well as the Instagram account VirtualPenShow (https://www.instagram.com/virtualpenshow/).
If you want something extra customized you can order from a supplier such as nibsmith.com (linked directly below) that can do a custom grind before shipping it to you. Alternatively, nibsmith.com or a multitude of other professionals offer send in service for a range of fees based on their experience/demand/level of work required.
https://www.gouletpens.com/products/lamy-2000-fountain-pen-makrolon?variant=11884844875819
https://nibsmith.com/product/lamy-2000-fountain-pen/
https://www.reddit.com/r/Pen_Swap/new/