come to think of it: I think every newer rad is somewhat of a floater install...anyone confirm? Maybe expansion control? Oof, I just realized mine is bolted straight to the rad support.....
This barracuda is the third car I`ve put an alum. rad. in . I have only made sure to shim the rad. where needed to prevent "any" twisting or lop sided puling up tight. No anodes, no ground straps, no problems.