Note, I'm discussing transplanting the entire drivetrain into the Justy, not just the motor, so transverse vs. longitudinal mount is of no consequence.
The plan would, essentially, consist of gutting the entire engine bay, and using a Sawzall and plasma cutter to remove any and all crossmembers and bracing that isn't essential to chassis integrity and blocks installation of the EA82.
Custom tubular crossmembers would be fabricated to hold the motor and drivetrain into the vehicle. Axles would be modified and rebalanced to attach to the new gearbox and rear end. Driveshaft to rear end would be shortened and balanced for the chassis. Holes would be cut in appropriate places to run clutch, shifter, and electrical components, as necessary. Radiator would likely be relocated.
My primary question is, is there enough space between the sides of the engine bay to wedge the EA82 in without cutting support out of the unibody?
/Andrew