67 valiant redo

Please let me know. I was a mopar guy years ago. Now it's what works. I was comparing a 451 to an LS3, but very few videos of 440's or451's vs LS motors. Hard to believed I considered the swap, but like you, I've driven a few and the hemi isn't user friendly. I love my cuda but it's gonna have a gm heart. I like the simplicity of the 451 but the mileage,lightweight, and relialibility of the LS has it beat... Imo. Are you running a 6 speed?