Car EB engine has cast pistons and rods. Only the crank is forged. Besides the engine, you have to consider all the rest of the drive train. Transmission, transfer case, rear end limitations and all the rest of the shafts & u-joints. And then... how do you expect to get all that power to the pavement? Also.. engine parts are cast in Mexico, for what it's worth. Note... Truck has stronger internals.
A re-manufactured EB car long block retails for $4,800. Plus install. Tranny ain't cheap either.