The aftermarket for some reason has left are trucks out as far as lift parts etc. I used 69 up lift springs and your shackles on the front of my 68 even though the were sold for 69 up..... So my question boils down to, what is the difference that we should be looking for in these trucks that the parts will not fit? In paticular I was thinking of doing a shackle flip in the back with your brackets and axle relocation blocks. What would I have to modify to make it work? Thanks! and sorry for jumpin around so much. Skin grows back, Parts cost money!