longer shocks

I installed the ford torsion keys and tuff county add a leaf and got about 2" of lift front and rear on my 2004 Z71. I know the stock shocks are probably fine but does anybody have a part number for shocks that are 2" longer? Doesn't matter the brand...Rancho, Bilstein, Pro Comp. For that matter, does anyone know what the collapsed and extended length is for the stock shocks?

The rear shocks are almost fully extended on my truck right now and I have to think the front shocks are to. I have a knocking noise in the front and wondering if it is the shock toping out?

Thanks

Check out these IDK how much they are but they should be what your looking for

Bilstein 5100's
http://www.bilstein.com/offroad.php#5100
sry maybe not i dont think they will work wrong year
http://www.bilstein.com/suvs_5100.php