1.65 adjustable rocker arms

Aussie company who make some really good gear, the 'platinum series' are very high quality but $1200US + shipping is a bit up there.
I used those yells terra rockers. Once. Because my customer was a cheap screw. They were garbage.
They make a 'street terra' budget line which is probably what you ran into, these come in a Yella Terra box (or at least used to) so people think they are the higher end parts.