What indication do you have that those are Hoshino,and not Crown drums?All the lugs,spur mounts and T-rods look like Crown parts.I'm asking this because in a previous post I'd mentioned that Crown drums looked unique from Pearl,of which they were supposed to be derived,or a stencil of.Red Pearl is very cool...
They are without doubt "Hoshino Kougyou" - not "Hoshino Gakki", the factory behind Star, later Tama.
Hoshino Kougyou was a factory, and the kits sold under many names - here in Europe "Aria", "Santana" and "Luxor" amongst others. And sometimes just "Hoshino".
T-rods and claws on this kit are not original, maybe that is what greates confusion?
Regrettably, this forum has helped spread more uncertainty about this brand than knowledge, as a couple of the guys that knows a lot about Star and Pearl and their associated stencil brands for a long time seemed to deny the existence of this, the third japanese brand (until Yamaha came along). Thus, if you go a couple of years back, you will find threads with Hoshino kits that was described in a lot of different but faulty ways - "mix-ups of Star and Pearl", "transitionary kits" and so on - while they really just are Hoshino Kougyou.
On the other hand, during the last two years, there has been a constant flow of Hoshino kits popping up, with pictures. You should be able to search and find those threads.
The lugs on your kit are a 100% giveaway - and they are fitted to the vast majority of Hoshino kit. A second, pointy ("Star"-like, if you like) type was fitted to the cheaper kits, and the last (ca. 1978) kits were fitted with a copy of Rogers Beavertail lugs.
Regards
Jon