'29 and '30 are two different body styles and the grille shells are different too. Do you think the hoods would be the same length ?
The 28/29 is 28 inches (at the top hinge). The '32 hood is 32 inches. Don't know the length of the 30/31 -- but if it's 30 or 31 inches it would be fitting
I just went out and measured my stocker 31 coupe on both sides 31 3/8 at top tapering to 31 at the bottom, go the same on both sides..