Their service was good and they were reasonable , I had them redo my original 289 3bolt damper for around 80$ . However , it pays to shop around a bit because Jeg's and Summitt offer some of their new "house" brands for just a bit more, even some of their "hi-per SFI " no name balancers . I think some of vendors for engine shops ,"Pioneer" for one has a line of popular dampers.