What a cool find! I love the wagons too, and I love mine, albeit mine wasn't a 6 cyl originally, so I had no qualms about swapping in a 428.
Enjoy your new wagon... I know you'll love it!
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Eric Mitten
'74 Bonneville 4dr Sedan (455/TH400/2.93 open)
'72 LeMans GT (455/M-13/3.23 [8.5"] posi)
'71 GTO Hardtop (400/TH400/3.07 12 bolt posi)
‘71 GTO Convertible (455HO/TH400/3.23 posi)
'67 GTO Coupe (455/ST-10/2.93 posi)
Deuteronomy 8:3