Just installed on the Driver's seat. Worth every penny; I think the passenger seat would benefit a *lot *more as it does not have any angled support, unlike the driver seat.

Stock was insufficient for me - but I was surprised when I first hopped in that it actually enables way too much leg support (for me). I had to adjust the seat / level out some of the new angle. The sweet spot for me is probably 25% of what the new angle the seat jacker enables. Will help for long road trips.

*Only heads up not in this thread or on Youtube, is that I found some of the (4) plastic covers to be a slight pain to remove. The rears were simple enough (removed inner-> outer) but the front cover, closest to the door, needed to be pulled directly out before it would budge. Took me 2 min of cursing to get it. All four snapped back into place easily.