Should new carpet have factory holes precut?

Start with the rear carpet first also.

I like to get them out of the box ASAP & lay them out flat in a warm room.

I will then 'rough' fit them to the car, rear carpet first, then the front.

I then crank up the shop heat to 90 degrees & let the carpet sit a day.

Then massage it as tight as possible to the floor contours & when satisfied with the fit, start making holes, bolting seat belts in to the tunnel.

Then on to the front starting in the center our again. Any holes for console, buddy seat, shifter, etc.

After that, the outer holes including for the the dimmer switch & seat belts bolted in again.

Once satisfied all is well, edges trimmed leaving enough along the sides for the sill moldings, trim & kick panels to overlap to hold the carpet in place.

After that, holes for the studs in the seat tracks.

If the shop is still warm when done crawl in for a nap! :-)