What are/were the LA factory roller engines? Did they oil through the pushrods?

Also, has anybody actually ordered/received one of the new Edelbrock Magnum Airgaps?

Professional Products has their Magnum/LA Crosswind (Airgap clone) for the SB Chrysler listed in their 2003 catalog & its still not available yet.



Factory rollers, 85-92, I think.
They oiled like the older la's.