You can use it as guidance, but I would build the 413 shocks emulsion style. Mine have been this way since October and the car feels better with them IMO and based on my driving style.
Yes you'll need to drill small hole in cap where there's a screw hole at. When I build mine I put oil to top of shock and then slowly screw the top on about half way down, and slide shock shaft up so it bleeds out the small hole, finish screwing top down and then tighten small screw into bleed hole.