Here is another post where another way to lower it is shown:
[link=http://www.rcuniverse.com/forum/m_2881391/tm.htm]Need stiffer springs for modified Genesis_ - 4/16/2005[/link]

I kept the top shocks and Jected did not.

"I attached the bottom of the 8 shocks to the overhead shock tie rod end mounting holes on the lower A arms. I mounted the tie rod ends to the lower knuckle hinge pin point using the long screw(s) from the original shock mounting point. This has lowered the truck about an inch and the shocks have a lot more leverage."

I orginally did this with the stock shocks and A arms. I am now using , I believe, "Savage" size alum shocks as Jected shows which required spacers inside the shocks to shorten them.