I love how people try and jack secrets from builders from just looking at pictures. There is a lot more to what professional builders do to these things than what a picture can tell you. How about instead of trying to copy some dudes picture you guys go out and try doing it yourself and see what happens. How do you think all the big builders learned. There's very little literature out there on the work these guys do and teaching yourself isn't exactly cake. Why do you think they charge so damn much for the work?
I pride myself in doing all my own work, and I've figured out a lot of little shit that makes pretty big differences by just trial and error. Yeah you might fuck some shit up from time to time, but that's part of the learning curve. I had centering springs on my shift fork shafts around the same time the "dunable override" transmission thing came out and that was one of the big things that makes those work. I figured out part of their little trick just saying to myself... I wonder what would happen if I stuck this in there...?
Instead of waiting for some magical picture that you all think is going to give you huge performance gains (if you think you can duplicate it) go out and do it yourself and let us know what happens. Besides, I kinda doubt very many people who would try and do something like this based on a picture have the skills needed to weld aluminum, and do it right.