The front mud guard is about 5 inches off the ground and the rear is about 6-7 inches.
I installed the DJM kit myself. At first i wanted a shop to do the install since i wasn't familiar with Toyotas (I'm mainly a Honda guy). Unfortunately the shop wanted to charge me $350 for labor + alignment. So i was like "Thanks but i'll install it myself". It was quite easy although its alot harder than installing lowering springs on a civic.