It should have hood scoops, blacked out grills and no rear spoiler.
Kind of like GTO_2004's avatar.
A different tail light set would be better, maybe a two- or three-bar horizontal LED array set into the rear panel?
Those were the main visual differences between the GTO and the Tempest/LeMans.
If the GTO was still being produced today as the Mid-Sized-Car-with-the-Full-Sized-Engine, (Tempest/LeMans w/389ci)
it would be a Grand Am Coupe with scoops, a blacked out grill and a 3.8L V6. Hmm... Kinda like the Grand Am SC/T, but without the rear spoiler and with the 3.8L instead of the 3.4L.
That might be fun, and it would be affordable, too! (Relatively) But, it wouldn't have a V8 and it would be FWD.
At least the '04 GTO WILL be RWD and have a V8.
Put the SC/T hood on it, fix the tail lights and get rid of the rear spoiler (save it for the Judge!) and it's good to go!
__________________
"If your lawyer's asleepin' better give him a nudge,
everybody look alive, now here come th' Judge." - Sammy Davis, Jr.
'69 Expresso Brown/Gold RAIII Judge HT
'86 Carmine & Black/Red 1.8L NA Sunbird GT Convert.
'03 Montana EXT
Pontiac 1926-2010?