Just installed mine a couple of weeks ago. I followed the instructions on the threads and it worked out fine.
I used a Dremel tool to cut off all the mounting tabs and to cut of part of the back of one fan bracket to clear the steering box (like in the pictures). Went though a few cutting discs but it wasn't too hard.
I took the bottom bracket from the stock fan and mounted it to the top of the Ramchargers fans. Had to drill a couple holes in the top of the Ramchargers shroud to do this and lined it up and marked it with the AC lines bracket mounting holes
Everything fits snug and I just dropped the bottom of the Ramchargers fan into the groove on the bottom. I was going to mount a bottom bracket but everything still seems tight and it doesn't move on the bottom yet.
I was running 195-200, but now am running steady 175 on 90 degree days after the Ramchargers install, switching to distilled water, and using a radiator from Nick Micale/ArizonaGN.