Tubular k vs factory k

What car, what headers, what steering box, and what changed other than the 273 to 360?
Ok 67 barracuda had 273 with hooker headers and stock stearing box.
Installed frame connectors 360 and dougs headers also tried borgeson box header hit both boxes IMG_3593.jpeg IMG_3594.jpeg IMG_3594.jpegIMG_3595.jpegIMG_3598.jpeg