Just tossing ideas out n seeing what sticks.. ive got a 98 4.6 dohc sittin in the shop with bad rod cone out my old lincoln cont. Was wondering if anyone had ever put them heads on a 5.4 is it possible to swap sohc for dohc? Basically biuld a navi motor? Toss in some cobra cams and headers? Honestly not plannin on doin anythin to my 5.4 atm other then headers maybe. Still dont stop the mind from buildin (i have visions of twin turbo dohc 5.4)