Laying frame on 71 C10 questions

[chevychase]

I'm trying to get my 71 C10 to lay the frame on air bags. I didn't want to Z the frame to lay it, so I had a crossmember that had 1.5" notch and then took it up another 1.5 into the frame giving me a total of 3" up into the frame. The crossmember was also moved forward an 1.5"

With 2.5" drop spindles, should I be able to lay the frame with 29" tires? Anything else I should do or undo?

Man, I hope this was done right!!!!!! Excuse the rust, when it's all done I'll have it sand blasted and powder coated.