Offset upper bushings are a must. Remember the factory caster setting was -1/2 degree. For every degree of forward rake you lose 1 degree of positive caster. Shortening the strut rods helps also. The most extreme idea I've seen was to relocate the K-frame bolts forward moving the entire lower suspension except the upper arms. worked very well. Mine has plenty of adjustment with offset bushings in the front location of the upper A-arm and strut rods shortened 3/8"
Doug
Doug