It is possible to calculate the necessary engine height. Of course, the result is only as good as the numbers you insert in the equation, but, having said that, the engine height (vertical distance from the ground to the engine's center of gravity) should be:
[wx-fh(1-p)] / (fp)
where "w" is the wheelbase, "x" is the percentage of the static weight on the front wheels divided by 100, "f" is the effective tire coefficient of friction (around 2.5 or slightly higher for a good slick), "h" is the height of the center of gravity of the car WITHOUT the engine, and "p" is the engine weight as a percentage of the total car weight divided by 100.
Car weight includes driver. Engine weight is, of course, the weight of the engine/transmission package.
This setup will leave zero weight on the front wheels on launch.