Mark Leader recommended Russ to me. The whine is acceptable but it is there. Whine is at the highest pitch between 60-70mph if I remember correctly. But with a 2.5-3" exhaust, I say the whine is barely noticeable. Mark Leader and SpecialtyZ are the two keywords that I based my decision on to have Russ install my gears. By the way, the gears I have are the first batch which some I've heard say are the noisier one. Anyways, check out the pics below on how I shipped by differential via DHL. I live in Dallas TX and Russ is in CA.