CONTROL FREAKS IFS A-Body 440 setup

Both my cars 69 Valiant with 440/727 and 68 Charger 440/727 will be drivers, no trailer queens. I want to drive them! Occasional auto cross, just don't want them to break. Lol. Want good suspension that can hold stock weight if that's the way I want to go. Again, thanks for all y'all's input!!!