they are just nuts that hold it in... i might have what you need though.. i will let you know later
ooooh i thought that you had a s13 or something... i see now... yea junk yard for that
mmm well if you have a s13 parts car cut it out of there... cause thats gonna be your only bet unless you have some custom made at a tool and die shop..
Measure the bolt length and width, and bring the nut with you to a bolt supply shop, they should be able to help you out