If you want original, I would recommend the factory dual snorkel. Not exactly inexpensive, but correct. And I think they look best (personal preference).
You can also find some single snorkel versions.
EBay or even the classifieds here should have one/both available.
If you don't care about factory, then I would assume a million different 14" open element options in chrome or black or most any color are available aftermarket.
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Eric "Todd" 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)
'67 Tempest Wagon (428/TH400/2.56 posi)
Deuteronomy 8:3 
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