any rust is common has alot to do with where it was sitting i seen covers or sitting by trees on the ground make thing rust if floors are gone then inner and outer rockers most all the time are gone lower cowl can go so it very well could be on its way but you can rebuild it$$$ as now you can buy just about any thing for them find a better front cowl clip .one of my last jobs i put all used A pillar/cowl front window surround parts in a mid year vette white glass car that was a fuel coup she had abit of rust