Although the front brake lines do not appear stressed on my 2" lifted disco the rear brake pipe was closed to being ripped out! I was jacking the body up to let the suspension hang and found the rear springs dislocate and the brake pipe was dead tight!
I recently posted all the mods on my 93 Spanish spec (I know I will get the pics) and found the dislocation, brake pipe, and tyres rubbing (265/75/16) were the only problems found so far in 4 months and about 6000 km. A recent trip to Spains version of the 'Grand Canyon' put the truck through some serious landscape and no problems were found.
regards
Dave