Don't know why but here let me show you what we have been doing.
Greg designed and laid out the inner panels that mount above the wheel tubs and I took pictures of him doing the work,
first thing is make a cardboard pattern complete with notches and the bead roller pattern,
check
now do that twice and after 200 test fits and trims, transfer that to some 16 guage steel.
Check;
Now cut it out and chase it around the bead roller, then brake it on the brake
check
now fit them and tack weld them in.
checkmate