TP90 - Bridge position   Ceramic 8, with coil tap.

BP90 - Bridge or neck position   Alnico 5 or 3 rods. Coil tap option.

P90T - Bridge or neck position   Alnico 2, 3, 5, Ceramic 8, with coil tap

Fat Moggy - Bridge(52mm) or Neck(50mm)

Alnico 2, 3, 5, Ceramic 8.  Chrome/Gold Covers. Coil tap option.