HPOP Link showing E-Z Lok inserts
You will need a narrow, short drill frame for the passenger side insert to get good alignment to drill hole. Mine is a Milwaukee 18 Volt and it just fit albeit was just slightly off center alignment but it did work. Or you'll have to pull the passenger intake runner as it's in the way of large frame drill. Overall easy mod to do and well worth the effort. My driver's side ended up being stripped so timing to do this was perfect.
Drill bit is a short 27/64.
Tap is 1/2 bottoming tap and I ran a standard one in first.
Stats for the tap, bolts etc are on EZ-Lok box.
Also recommend using aluminum tap lube makes for nice smooth tapping.
jrc