Should work in 1990-2005 Miata but check your application to be certain.

NA01-28-460 x 4 $18.80 Each
BUSHING,LOWER ARM (NA01-28-460) - $18.81 - NA0128460

NA01-34-480A x 4 $35.39
BUSHING, RUBBER UPPER (NA01-34-480A) - $35.39 - NA0134480A

NA01-28-4D0 x 2 $18.81
RUBBER BUSHING,LWR A (NA01-28-4D0) - $18.81 - NA01284D0

NA01-28-8C0C x 6 $17.39
BUSHING,RUBBER (NA01-28-8C0C) - $17.39 - NA01288C0C

NA01-28-4B0 x 2 $18.81
RUBBER BUSHING,LWR A (NA01-28-4B0) - $18.81 - NA01284B0

NA01-34-490 x 2 $17.97
BUSHING, RUBBER (NA01-34-490) - $17.97 - NA0134490

$400 Shipped in Canada and USA

Located in Victoria BC

 

I'd go post these on the NASA,SCCA,spec miata forums if you have access...with the aftermarket bushings(energy suspension etc) being so inexpensive, most people go that route. The only people I know that go back with factory bushings are the spec miata guys because the rules force them to. Good luck...