Bmw Z3 M

How would it be difficult and it would offset the balance?

The engine compartment is too small to fit historically. If you have time and money, you can move the dashboard and firewall and mount the engine at an angle, and get a custom hood to accommodate the bump. better option supercharge the engine, and improve the rear axle and diff.

3500, with new headers, intake Flag

Everything is possible if you have the money for it. A good suspension set up can sometimes compensate for the unbalanced weight distribution.