torque level with torque boxes and connectors

[chromeitout]

I'm curious as to what you guys would say a safe torque level would be (as far as body twist and such) without torque boxes and subframe connectors.  Now, how about with them, but without going to a cage.  The reason I ask is I am considering swapping in a big block, but I don't want to go to a cage.  The car will be a 100% street occasional driver, but I have alot of turbo parts that I've been itching to use left over from a drag car project.  The parts I have currently will easily put down 900 ft/lbs (to the rear wheels). I know this much would need a cage, but do you think I'd be able to use at least 650-700 ft/lbs. without one?  If not I'll probably sell what I have and stay sb, thanks.

[Chryco Psycho]

this is a very hard call to make , the turbos generally hit soft & build power which is far better than nitrous for example which hits hard & violently  , the other variable is traction , as long as the tires spin the frame will not take a lot of abuse but if you have traction & the car starts pulling the front tires for example the frame will take more abuse
 my best guess with turbos & reasonable traction you should be ok , I would try it & take some measurements & check them often , if things start to move you have a problem