We bought a rare 1972 Buick GS 455 Convertible that was wrecked 33 years ago! Will it start? 

We bought an very rare 1972 GS 455 Convertible. This car has lived in PA its entire life. It is numbers matching with 62,000 miles.
Carb Rebuild Kit: quadrajetpower...
Quadrajet Power Rebuild Video: • Quadrajet Power - Quad...
Sold new at Mount Joy Buick in Hanover PA. Early build car, 9/1971.
Options:
A9 455 Engine
C1 Power Disc Brakes (Standard with A9)
N25 Through Bumper Exhaust Extensions
F7 Super Wide Oval Group G60-15 Oval White Billboard Lettered Tires with 15x7 Chrome Plated Wheels
G4 Positive Traction Axle (3.08 ratio)
I6 Air Conditioning
K3 Speed Alert
L1 Tinted Glass
D35 Sport Mirrors (1 of 18 produced with Sport Mirrors & painted Cortez Gold
S7 - Tilt Sterring Wheel
U1 - Convenience Group Lighting
U9 - Rallye Clock and Rallye Gauges
X2 - Rallye Steering Wheel