Mechanical roller lifters, solid. (Pin oilers?)

A small grove can be cut into the bore to put pressurized oil out the bottom onto the camshaft. Comp Cams sells a tool for this as it's an old-school deal. The tool is $160 though. Given the costs of the ones you have vs the "right" ones it might be best to return the lifters and get the direct oiled versions rather than risk someone who hasn't done it before hurt the block.