chicoirie

I have a 92 toyota hilux solid front axle 3.0td a/t. Just got some extended shackles from a friend that scrapped his 89 hilux I installed the new shackles also installed some new shocks front and back stock length (skyjacker rs7000) and a steering damper. I am trying to figure out the height of my suspension lift, if I need longer shocks and why is my oil sump damaging the top of my damper every time I go over a hump at high speeds. I have a 2inch body lift with some 33 bf km1 mt.any advice and help would be greatly appreciated.