Grille cracks

Hi.. Can someone tell me the best way to fix cracks and breaks in my 72 Dart grille. Im going to swap it out for a 71 or 70 grille somewhere down the line,but right now i need to get it moving and looking good. Moving to Missouri this Spring, hopefully i can find the grille i want down there..Just looking to hold my grille I have now together for the tow down there....Thanks,DAN