Her's 1 I did a few yeats ago.
If ya have ever had a 46- 48 Ford hood apart you knoe they are 3 pieces.Rt side, left side and the center trim (which tapers front to rear)
First thing done was build a can under the hood and weld under the center, to keep everything symetrical.
Then flip it over and cut the center out.
Fab a filler piece to fill that area and weld in.
Next was to pancake, section what ever the sides.
Went from zero on the rear to 3 1/2 inches in the center front.
Cut that out and shoved the nose down and welded up the sides.
Ya still with me?
Next I extended the front down 6 1/2 inched to faded into the 46 olds grille.
Not for the faint of heart, had over 80 hours in that puppy.
On a side note, Guy comes in the shop the day I finished it and when he saw it he wanted me to do his.
All I said was
"Sure I'll do it, 50 bucks an hour @ 80 per, you do the math! "
He never did have me do it