440 source engine packages

Hpw many have you personally built and/or dyno'd? What people like to say on the internet and reality are often not in the same space. I say that from direct experience on the subject at hand.
You can make a slant 6 show 700HP with the right dyno operator. lol
I hear that. Engine Masters dyno'd a 410" sbf.9.75:1 cr, afr 195 heads, cam I think was 238*duration at 0.050" I forgot what the lift was. 750 Holley, edelbrock performer rpm airgap. Power was 506 at 5900 rpm's. That's pretty good and they did it without spinning it over 6,000