1966 Bonneville/ GP
 

curious whats involved in changing a 1966 bonneville grille to a GP grille is the header panel and the lower panel the same and who has a nice set of 66 GP grilles

AFAIK, the nose piece needs to be changed but the lower panel is the same. I was going to do my Catalina but never did. I have a nose piece and two grilles without the egg crate pieces. I also have an NOS taillight panel. Was planning to make a GP 2dr sedan.

got it thanks

Is this a common modification for 66 full size Pontiacs? I ask because I have a customer 66 Bonneville convertible with a GP front and rear treatment on it. He just loves it. I think it was done 20 years ago. The smooth GP rear styling does look slick.