Hercules

Anyone know what size bolts attach the grill support frame to the hood, hood release to the grill frame and the nut size used to attach the top of the grill studs to the front of the hood on a 97 Dodge Ram 2500? All the bolts are 8mm head size. The couple I took out of the hood release are so rotted I can't determine the thread pitch and size. I don't want to remove the bolts that attach the frame to the hood until I have new bolts on hand in case those are as badly rotted as the others. Thanks!