I have a KBC silver aluminum low profile 60% case and multiple different keysets.
Everything is basically brand new and has seen very little use
DSA Dolch with colored gaming set
Tai-Hao PBT Miami
Vortex Front Printed Black PBT-Cherry Profile
Vortex Red and White 60 % PBT Set
Vortex White Trans PBT/POM Set
SP Hacked By Geeks SA
Would be willing to work something out for the HHKB!