Have a 3 core Al. Rad. In my 89 GT. I didn't install the Rad. It came with the car. I haven't had any issues with the Rad, but I was installing a new Alt and power wire upgrade so I loosened the 2 upper Rad. Brackets to route the new power wire and also re route the light and existing Alt wire behind the radiator. The Al. Rad. Is wider on the ends where the bracket clamps down and only half the bracket seems to be touching the Rad. The previous owner had the bracket angled to miss the end and clamp the Rad. just pass the wider end of the Rad. I prefer the bracket to be straight. I don't know the brand of the Rad. The Rad seems secure, but don't need it coming loose. Are there any aftermarket upper Rad. clamps besides the chrome ones I have seen? I have the bolts tight on the clamp, but just would like the clamp to extend over the Rad. Better to ensure a solid fit.