2013 Toyota Tundra XSP-X

I got this truck a tear ago and the previous owner said it has a 6" suspension lift on it. How do I tell if it is 6"? It does have 35s on it, the front does rub when I turn. I'm not sure how to tell? I measured the lift blocks in the back and they measure more like 4".

 

They way I confirmed my truck had 3" lift was I measured stock height from center of wheel to the fender, both front and back. Stock height was 22" in front and after lift, it was 25". So 3" lift was done correctly. So you will have to find stock height on a second gen and then compare to your current measurement. There may be some folks here that have a better way to figure it out tho.

 

Ive uploaded the only pic have on my phone, I will post more later.
Anyone have the stock measurements or know where I can find them.
Also it has a rough country lift on it and leveling kit, can I add to that or do I have to get a whole new setup. I want to level it up, can I just add the leveling kit to the lift. Or is it not that simple.