your advice on repairing a crack on sharktooth grill

This has been discussed here, maybe a search will help. I read that using a part of a donor grille for some of the plastic, and a soldering gun to fill it/ melt it back together... many others I'm sure...Acetone to melt the plastic and fill/

http://www.forabodiesonly.com/mopar/showthread.php?t=41504&highlight=plastic+grill+repair


http://www.forabodiesonly.com/mopar/showthread.php?t=42581&highlight=plastic+grill+repair