I'm doing the carpet in a 73 right now, vettedude is right on the money. The reflectix is a definite must, about $15 a roll, 3 rolls will do the whole interior. The sharp knife makes the cuts easier, but fit it, fit it, and fit it again before you cut. Cut small and open it up as necessary. The hardest part I've had fitting so far is the rear compartment unit, I had to cut some of the insulation off the underside of the rear center carpet to get it to fit. Also, get some 3M Aerosol Trim Adhesive to help hold the edges where needed, you can get it at bigger Walmarts. Good luck, the results are impressive if your carpet anything like the ratty crap that was in this car.