awful sound when hitting bumps - cant determine the problem

hey all,
well i've been driving the dart around but the sound is getting worse and i dont want to potentially injure myself, my family or anyone else should something major happen.

basically when i hit a bump - big one or small one - at any speed, there is very audible crunching sound coming from what seems to feel like right beneath my left leg beneath the floorborads. my torsion bar mount is really badly eaten away so i welded in a temporary brace on the torsion bar mount. i need to finish weld it and add some more bracketry but i ran out of argon. i also noticed my home-made hackjob exhaust was rubbing on the frame rail. so i pulled the exhaust from the header back and went for a ride. besides being obnoxious the crunching was still there. reinstalled exhaust and made that torsion bar brace and still get the crunching sound.

bounced the shocks up and down and they "seem" fine. the sound doesnt remind me of bottoming out - its more like crunching/creaking sound. and only happens in front drivers side when going over bumps.

could it be an engine mount gone bad? is it most likely the torsion bar area? i thought the torsion bars twisted so i guess i just dont know why they would make the sound when i hit a bump?
any advice as always, is welcomed.

thanks all and Happy father's day!

- jason