Well your learning from the good school "
school of hard knocks". The mustang clip won't do you any good as they are a uni-body design and must have aprons supporting them. This is why the crossmember kits where made to use just the suspension components not the frame parts. there have been lots of articles over the years about getting the pieces from the bone yard and adapting them to your application.
Not sure about the track width but a Torino from the '70's has a true frame that you could graft the front 1/3 on and get independent suspension or use both ends and get coil springs all the way around if it's not too wide.