should be able to get a .70 housing from any place that builds turbos. industrial injection, elite diesel, RCD or trusted performance. each one might be a little different just because of how it might be bolted to the pedistal. So for example...if you have a industrial injection turbo and get a .70 housing from trusted, the trusted housing probably wont bolt to the industrial injection pedistal. I would get the .70 housing from industrial if your 66mm turbo is from industrial. This way you know it'd fit and should bolt up perfect. Just give industrial a call and talk to them.