OK, so I ordered Manley valve locks and they are on back order but the vendor carries OEM and is ready to ship. Anyone using OEM locks for their head? My setup will be:
Supertech dual springs and Ti retainers
Supertech valves
Supertech guides

I haven't heard of any valve lock failures on our cars before but a local shop around my area popped a valve lock (in his K20 Civic) on one of his valves while he was doing a burnout. REALLY don't want this to happen to me.

 

Me personally would go with the after market valve locks, remember that OEM are mass-produced for economic purposes, that doesn't mean they won't work in any way but I'd prefer to have the insurance.