10* retainers and keepers

Is there a source for 10 degree locks and retainers for the factory/+60lb valve springs that are steel and not titanium? I’m not going to be spinning big RPM and will just be running a 178/208 Hamilton cam on a farm truck/tow rig. If I have to get Zach’s single spring setup or a different single spring to get the better retainers and keepers I will, but if I can get a better Steel retainer and keeper setup for the 60lb springs I already have I’d be tempted to go that route if my spring pressure will be adequate. Thanks y’all

Contagious Diesel had some.

I seen a market for a steel retainer to fit 60 lb springs for years ,but takes a large buy in to get some made with correct installed height.