RE:down bars
are you speaking of the tubing that goes from near the top of the firewall to near the end of the frame? If so you will need connectors behind your firewall to tie into unless you want to go straight up in front of the firewall down to the frame but you will or should tie into your firewall anyway. But you will be able to stiffen up your front end. And if this isn't what you were wanting to know...Never mind