I had Nelson Performance mod it a few years ago, but I have since rebuilt the whole thing, because I changed so much of my setup including swapping to a 4l80e.
I don't know a thing about using those brackets, but I used the stock truck LS acc. brackets and the Holley R4 comp bracket that fits my OE 95 compressor, my lines and compressor are bone stock, and they fit perfect.
Thanks guys, I am so ready to have it painted, and yeah I would have never believed 10 years ago that it would have taken this long, but I guess that falls in to the life happens category!
Agreed for an extreme drop the top of the pumpkin would still hit, but with those notch's and the center brace trimmed to the floor you aren't going to get any more clearance without cutting the floor.