Like the prior poster (swoop1156), I just installed the Seat Jackers by DesertDoesIt.
I back to back drove my car with base seats vs one with the full bore Semi Anilines, and noticed that I was more comfortable on the gas pedal and under the knees in the fancy seats. I’m 6’7, longer torso than legs just as a data point. Bought the base seats on purpose knowing my use of the car and can always swap down the road if I want.
Here is what I installed thanks to the original poster, fit perfectly and super easy install. Attaching a few photos as well. It has made a pretty noticeable difference for me. Before my shins were a little uncomfortable because of the hump in the floor / gas pedal placement, and lack of thigh support. Now it feels equivalent in thigh support to the upgraded seats and MUCH more comfortable on the pedal. I do think the thigh extender comes out a minute amount further on the upgraded seats vs base.
Im picky with ergonomics having had very well setup track/race cars that took work due to my height. Only things left on my list to solve in the ergo dept would be a way to extend the stock steering wheel another 1-2inches, and if I’m choosy sit a little lower in the car.
Here’s what I ordered:
Add front seat lift and leg support in your Sierra, Silverado, Colorado, or Canyon. No-mod install. Improves comfort and driving posture.
desertdoesit.com