as noted milner will sell you the appropriate type.
i think the screw on are jdm only with the hook type for other markets. i got some aero type ones from ebay which are screw on type, they were advertised as for an mr2.
the ones i have are 18", which is the correct size, but i note for later models the size is 20". not sure why this is, looks like 20" will fit ok though, so i kind of wish i'd gone for that.