Gas Monkey garage Hemi swap

But holly hell! They took out the 340! And installed a Mexican hemi that will cruise at 70 mph and 2200 rpm with the a/c cranked and get 25 mpg! While making 385 hp! They could have spent 20k on the fossil 340 and made 10 more hp, half the dependability, half the mpg and disrupted the earths gravitational pull by doing something other then what Chrysler did in the 70's