It wont be a reliable swap imo, you gonna need new mounts, new gearbox, new axles, tricky wiring job, unbalanced engine position cuz no one has done it till now. Get yourself a good old D motor. Your car is on Carby I believe, your current gearbox, mounts, axles will be utilized and the wiring job wont be an issue and trust me a healthy D isn't gonna disappoint you.