The car is a replica Porsche 917. It uses an aluminium space frame chassis. The car weighs around 1,800LBS(It's a race car). I don't care much for the range as long as it is not too low. I want this EV to be AWD, and I want to use three motors to achieve this; Two in the back and One in the front. I want a maximum speed of something over 100.
You seem to have some mixed and conflicting objectives..
Drag racing (competitive) requires a very different vehicle to circuit racing.
And a 917 was never intended as a drag car, so that in itself will introduce some disadvantages on the strip.
Why do you "want to use" 3 motors ?...that is not a objective you should start with.
....certainly for drag racing the front motor is an unnecessary addition of weight , cost, and complication, which will likely reduce the performance rather than improve it.
Even just 2 motors in the rear is an unnecessary complication for a good performance EV.
You should rethink what you really want to build .