Most contact cements don't have that high of a temperature rating and the top of fenders get pretty warm in the sun. The best type of contact cement to use on these cars is the Landau Top contact cement that is for vinyl tops and is heat resistant. However, I've only seen it in gallon cans and it's not cheap but it's good. Can be brushed or rolled on.
1 Gal. DAP Weldwood HHR Contact Cement