6 Lug Disc Brake Swap Question

[68fleetsidec20]

So I am doing a disc brake swap on a 67 1/2 ton using 88 spindles, rotors and calipers and a pair of 80's 3/4 ton lower A arms as outlined in one of the FAQ's. However I have ran into some large problems and I would like to know what others have done to fix these problems.

First of all the tie rod ends on the new spindles bolt from the bottom up on the 88+ spindles, unlike the 87 and previous spindles which have the tie rod bolt from the top down. This moves the tie rod down about 2" and it looks like bump steer may become a big issue. Is everyone else just ignoring this? or is it really not that bad?

Second of all the 88+ spindles are about an 1" taller which changes the angle of the upper A arms to more horizontal which leads to positive camber, so much positive camber that even after I removed all the alignment shims I still have a few degrees of positive camber. What am I misssing here? you guys don't drive your trucks like this do you? I imagine that the results may not be as bad with a lowered truck as the upper A arms will now be sloping downwards and negative camber will be increased. (As well as negative camber gains under bump like GM should have designed it) But I'm not looking to lower my truck right or maybe ever so my only options, as I see it, are to machine the tapered spacers between the crossshafts and the frame to try to gain an 1/8" or maybe even the cross shafts themselves if needed.

What do you guys think? any sugestions?