Fireside Valiant chat

SSVDP said
Oh on a ‘65 Valiant you can install a ‘65 Barracuda grill!

I am still learning what interchanges and what doesn't on early As

Thanks

Are the heater boxes the same from 63 to 65. So if I use the 65 dash, will I need a 65 heater box or can I use the 63 one.??