I pulled my car out of a crane operators garage. It was taken off the road in 1973. The car sat in the desert for many many years stripped down to nothing and all the parts were stacked all over the garage on shelfs and nuts/bolts in coffee cans. My grill was argent silver with no signs of black on it. I have always assumed it was the original since it came with the car in 1973, but I can not say for sure that it did. The car was built in La, then stayed 125 miles from there in the desert. But anything could of been changed for one reason or another. I was depressed that it didn't have a build sheet up in the seats, behind the dash, or any where else.
so I can not lay claim to my car coming with an argent gray grill. But I left it argent since it was with the car. I also added the red bars myself since I like the look. Sorry I can not add a yes or no to the grill question. I'm quite sure my I'd numbers are original in all locations. I can post the fender tag if someone wants to see it. Nice options to me. But it's a 318/4 spd , 323, 8 3/4. Has a couple of other nice options for being a 318 car.
I know the M46 cars are collectable, but I hold no special value for them for a bolt on option car. I just enjoy the car for what it is. A solid 70 barracuda 4 spd. The fun is endles