Hilltop Cast Winter style grill insert each one is handmade to fit each grill shell.  The surround and center bar are cast aluminum.  The grill bars are machined 6061 aluminum.  Welded and fitted for perfect fitment of each shell.   If you are interested in purchasing one for your hotrod please contact me directly to get you setup.  I make each of these to order I dont keep stock due to the grill shell differences.  With purchase we can discuss which grill shell you are using whether original or new.   Return shipping is included in price.  These can also be made for chopped grills or other years.  Thank You