To keep 440-1 top end or not

i have a 500ci 440 with a 440-1 top end.comp cam 23-707-9 mech roller cam,1.5 roller rockers. flat top srp pistons. bottom end has a eagle crank and rods
my question is how much work has to be done to my existing headers? hooker super comp fender well headers with 2'' primarys. car has a 440 in it now. was thinking of selling heads and intake to get 440ez's or eddys so im not cutting up headers. i searched and didnt see any post about mods done to make them fit.

thanks for any info