Supercharged guys w/ 6spd
I don't have HP numbers, but on my 8.5:1 forged H/C ls1 with meth I have gotten more aggressive on my tune recently, running 17psi and 18-23 deg timing. The car made 590rwhp at 10psi at like 10.3:1 and 16-18 deg timing. AFR is about 11.2-11.4 at WOT now. I don't know what it makes like this, but you get an idea. Mine doesn't slip a bit and feels great.

