I'm autocrossing my 65 without torque boxes or convertible inner rockers and I think it's OK and wasn't too worried about it. I'd like to participate in the SCCA Cam Challenge this summer and that means the old girl needs to put on a few pounds to get to the 3000 lbs min weight and yes there will most likely be scales on site. So this not horribly expensive TCP subframe connecter system will add some needed pounds at the lowest points on the car , certainly can't hurt in the chassis strength department even though the front connects to the wimpy floor supports, and can be installed in a day. The only thing that scares me is loading it onto my trailer! I could us a little input from others that have it or a clean side shot of just how far it hangs down. Thank you in advance! Yes, I know I still need torque boxes but it isn't happening in the near future. The subframe connecters are welded in place BTW. Only the center section is bolted in place for obvious reasons.