I need to replace the carpet on my '71.   240z's have 2 metal tabs under each seat to hold the carpet in place.  All the photos I see of replacement carpets do not have the loops cut in the carpet to fit through those tabs.   Does anyone know if the replacement carpets have those loops and they are just not shown in the product images?  If they don't exist, how do you hold the carpets in place?  I don't want to glue them to the floor   Thanks.