426 Hemi or 5.7 Hemi for a Duster

idk for sure but im gonna say theyd be about even. one because a 5.7 needs the computer and such to run it so youd have to buy a whole truck or durango are dakota. and if went with a full on real elephant 426 well prolly 10k just for the engine. iit may be cheaper to bore a 391 or 331 to 426 since they are real hemis but mounts, and a trans and a rear end to withstand it all either way you go. ive never priced it or would even attempt it cause well im a cheap *** but im going to say theyd be the damn near same price.