I ordered and HB-1 at the same which arrived first so i installed it (I mentioned it in a post on here).
I just got round to taking the cover off the Seymour Duncan and i can confirm that it does fit in a Ric cover.
The Seymour is made in America and very nicely made too. it's all around a sweet little thing, weighty, compact.
I took some pictures. Apologies that i only had my phone to hand. It's to little coils with a long bar magnet and a wooden spacer, in fact basically the same spec as the originals, so they claim.






I'll need to order a new baseplate before i can get it installed and let you know if it sounds okay.




