The reason they suggest using hood pins instead of a latch when switching to fiberglass is because in some cases the fiberglass would crack in the middle where the latch is. This was due to the hood lifting up at high speeds. Having the hoodpins in the corners is safer then a single latch in the middle. That said, our hoods are designed so that a latch is sufficient. Look at Corvettes also. So putting pins on a perfectly fine hood would be purely cosmetic. IMO, Yes. I'd leave hoodpins to purely race bred cars(like GT350's), or musclecars that came stock with them. If I saw them on a V6 Mustang I'd think the owner was a Dale Earnhardt wannabe. But as Ghostalker said, whatever floats your boat. It's your car.