U-Bolt Opinions

I did email these guys to find a length on these ones, http://www.polyperformance.com/shop/Currie-3-3-Dia-Axle-Tube-U-Bolt-p-24199.html
Grade 8, made for axles, 3" axle diam, if they are long enough I think they'd be perfect, and still cheaper than the other guys... Waiting on an email back!