Yeah you need a clearanced pan. If you can't weld, just buy the pan from andyf. Ive seen some guys that still had to ad more clearance to the c body pans,while!e it worked for others. I think the 73+ steering may clear a pan with no notch but I'm not positive, it wont swap over to a 67 k frame without cutting and welding anyway. On my 74 duster I used the c body pan that I put a baffle in, just because I had it, I don't think it needed it.