'68
Some '68's came with a 428 Cobra Jet, so yes they will fit. Not sure about all of what you need, but finding motor mounts, headers (not original cast iron, but after market) shouldn't be too tough for an FE.
Rev
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'66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi.
O.B.C. #2
'66 coupe
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