Yes, they are.
yes, the windows dont interchange tho
On my 72 nova the wire going to the blower looks to be purple.
No, they're the same length
Perhaps with some modification
Available engine packages, and Chevy did away with the 12 bolt rear end in 71.
Yes. The only difference besides the inside door panel is the 73-74 doesn't have the wing vent window like the 68 -72.
68 to 74 Chevrolet Nova (Chevy II). 72 to 74 Pontiac Ventura II. 72 to 74 Oldsmobile Omega. 72 to 74 Buick Apollo. 2 door or 4 door to match your car.
Yes
Yes it will bolt right on
Yes, this should be a perfect fit.
No, they're 2 totally different grilles