Need opinion

Not sure about the 426...I'd avoid that anyway unless you have an unlimited bank account. Schumacher Creative Services sells /6 to B/RB conversion kits that should cover your Valiant www.engine-swaps.com You might check to see if they list a Hemi conversion kit as well, but you can build a big block with enough torque to burn a hole to China for a lot less than a Hemi. Just my .02 though.
Good luck on "Maxine" :thumbup: