If you have deep pockets FMS sell that new 4.6 "Aluminator" crate engine. Supercharged 700hp @7000 rpms. Also comes as a naturally aspirated long block assy. I remember seeing a 1x4 and me thinks a 2x4 intake for these somewhere? Or was it a stack setup possibly?? Can't place it though. Unless I'm nuts and I'm thinking of something else which is always possible.