Bud,
for a few extra bucks you could step up into sheepskins.
The platinum range in sheepskin covers.come with a lumbar support pillow.
I believe there about $299 a pair for the front.. And OMFG You will not believe how comfortable they are . It completely changes the ride of the NAV.
I also went black sheepskins.to help darken the interior up too.
I've got a pair of the RM Williams canvas sest covers in the nav. They're made well and seem very hard wearing. Picked em up for $80. They come on special at Repco every now and then too.