Hi,
Yes it can be done, just remmember you need to make and ad some brackets to hold the new grille in.
so if you are still working on the car you can weld in some brackets, and if the car is finished, then you will have to find a nother way of fixing in the new brackets..bolt them in, or pop rivet them in.
check out my build in the garage, as I am just working on my moke with the same problem
mavro