Raised my backseat 4" so my subs in the box wouldn't be touching the underside of the seats. Boy, the passengers in the back are REALLY raised up. I didn't take into account though that the seat belt latches might not reach through the seat, so I'll need to raise them up tomorrow!

Pics of the seat-raising experience:

Before


Taking the bolts out


New bolt vs Old bolt


After


51 washers later


Clearing those subs now


View with the seat up

 

Did you use grade 8 bolts ??? lengthening them soo much could be a BAD thing incase of a crash ...
I'd also recomend using something more solid then stacked washers for the same reason

 

I'm not sure of their grade, I will have to double check that. They are automotive bolts from Lowe's. I really wasn't a big fan of this solution, but then again it was just to keep the backseat from squashing the subs. And I RARELY have people in my backseat. This can definitely be just a temporary fix. Don't they make spacers for such a lift? I plan on having my install done within the next month or so and will likely drive with the back bench up 95+% of the time.