How to make 600 - 700 RWHP - 6.0L

[IIVonnyII]

thought I would chime in on this thread, my trucks in my sig, but 205/100 conventionals , stock longblock besides studs / ****** . reg return and a custom fuel system with an sxe369 on the rollers put down 706 on fuel an 857 with a bit of nitrous.
back when I had a box 366 on it , I ran a 12.58 @106.5 at full weight in my ccsb. putting it around 650 wheel. but boy does that sxe369 make a big difference over my paperweight of a 66.