If you want a more correct pad, then they were actually a molded pad that fits the contours of the inner hood structure. REM makes a nice reproduction of the pad. They are very fragile to install, so a second set of hands aids with the installation. As Wayne stated, the reproduction hood pad clips have issues, so hopefully you can reuse your originals. The worst part about these pads is the size which requires them to be shipped oversize which gets expensive.
The yellow or black die cut pieces will work to insulate the hood for heat and noise, but are far from being correct. The only good thing about them is that they can be folded up with into a small bundle and shipped relatively easy.
So you have some different alternatives. Also, the correct molded style pads will cost about double what the incorrect ones will cost, depending upon your vendor of choice.