Woody,firstly welcome.
Like 46gmcpu mentions it's not just a straight forward grill swap.
I'm pretty sure the hood's different and AFAIK the front fenders and radiator support may well be different too.

If it's something you really want,like 46 says it might be better to source a complete front clip,but then you're into body and paint etc,it might get pricey!

1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.