74 jeep j20 6 inch lift

I did the same thng on my old wagoneer, the frames are different because they have the spring eyes on a big cast piece i think, I used another shackle to swing it lower and then welded it to frame but I think a beter way would be to fab a new bracket to mount lower and atach to original eye.

good point but i dont plan on jumpin my truck but i will defiantly check that out and do i have to extend t he brake lines

The front axle should be setup with around 3 degrees of pos caster for best handling, driveshaft angle will be whatever it is, I have on some baby jeeps cut the knuckles off and rewelded them to point the pinion up relieving the ujoint angle. I did not do it on my kids FSJ and has been good so far.

do you know the pitch on the front axle

The different knuckles are to get the steering links above the axle so you aren't bashing them on rocks offroad. The stock setup works but the drag link is put at a steep angle not parallel to the tie rods. That causes bump steer. The drop pitman arm lessens the angle of the drag link. In some cases in stock form, the drag link hits the passenger leaf spring. It's best to move the steering above the axle to protect them and improve handling but it won't keep you from doing the Spring Over.