Depends on what you’re going to use it for, and what happens below 3500 RPM with the zoomy engine. With the torque curve peaking at 5000 RPM, it will give a tremendous rush in each gear, once you get the RPMs up above 4000. So you’ll want to pair that engine with a close ratio gearbox and some steep-ish gears (depends on if it’s a street or roadrace application), for best results.
Your 347 is going to be 100% more drivable on the street, but on the track you’re going to get left behind if that 432 HP engine was in a Tiger that was otherwise the same as yours.