Laz, I used a cheapo JADA '60 Impala for the front grille, headlights and the rear panel as well. I just trimmed, filed and sanded to fit. The decals I ordered from Firebird Designs. Keep us posted on your progress.
Keith Marks makes a nice set of decals for 71-77 Trans Am's if you need the T/A lettering. I'm building one of these myself and will order those decals. I for one want the 1/24 version to add to my 1/24 diecast collection.
I have some of these and really like the scale as they fit in perfectly with my FM & DM diecast collection. Extremely nice builds by the way. I built the Monogram '70 GSX to go with my GM '70 muscle car collection in diecast as no one has done it in yet.
Here it is with the Danbury Mint '69 Judge.
And here it is with the FM '70 442 and the GMP '70 Judge.
Rich, it looks fantastic. I really like the '58 Fords especially from the rear. I like it because Ford done something other than the usual round tail lights.