i know engine height can vary a ton between installations, but the E58 360 i had in my coupe would have had no issues with running a tunnel ram under the stock hood with no modifications. it would have been CLOSE, but doable.
as i used a reversed corvair box on mine, i used a pair of 69/69 passenger side [center dump] manifolds from a 340 dart.
owning a junkyard back then helped with parts.
center dump headers were not available back then.