Same here, but I just went with my standard shackles. On most old Samurai, the factory springs have lost a lot of their arch and the OME springs will give you more lift than the advertise.im not a fan of the spoa. 1.5" shackles and 1.5" ome springs.
check out Low Range Off Road: One Stop for Suzuki and Toyota Off Road Parts call them and talk to william, or check out rock auto, but lowrange has everything you could ever want. personally i wouldnt go with the calmini, they are super stiff.