The panels are 16 gauge aluminum and weigh 11 pounds. They will not affect the ability of the factory hood hinges or aftermarket hinges to hold up the hood.
If you are running our engine bay kit you will need to trim a half inch off of the top of the core support. This will allow the front panel to drop down and not make contact with the under hood panels.
If you are running hood pins front and rear and you don’t have hood hinges, you will not need the notches cut out for the hinges.
If you are going to attach the panels with panel bond instead of bolting them in place, select “no” for pre drilled holes.
Six of the pre drilled holes in the panels match pre existing holes in the hood. Use them to align the panels. Run a 5/16-18 tap through the holes, then drill match the rest of the holes and tap them for bolts.