Re: Tien or Cusco?
Great product, offer all the adjustability (unlike some teins and others at same price point). Rebuildable. Available. Within your price range $1300-$1500.
Many race Mr2 will use upgraded stock suspension unless the owner wants the flexibility of changing ride height or vehicle dynamics based on race style.
Be aware; stock suspension is a set size. Coil-overs come in different widths etc depending on brand/design. Depending on your rims offset and size this can become an issue. On my recent Mr2 i changed from k-sport (came with the car) to BC, the front rims had clearance with ksports but touched the BC. So changed rims :)