What is the best way to hold the drivers and passengers for carpet in place? My recently purchased Z has the carpets sliding around all over the place. 

Early Zs have a metal tan that slides through a slot in the mat.

 

 

 

 

 

72 body and block, everything else 71, Tokico springs, Illumina, R180 CLSD, 83 close ratio, 3.90 gears, Ztherapy SUs, BRE 15X7 Libre wheels and BRE front spoiler.

 

 

There are snaps on the firewall, too.

 

Also the metal tabs from the floor have a clip that holds them down