Below 80kmh yes.
After 80kmh aerodynamics play a role that's nearly 3x as important as actual power. However as always power-weight will of course still play a role. Basically, the more power you have, the more friction you can overcome from moving the air out of your way. The more aerodynamic you are, the less air there is to move and the less hard it is to move therefore less power is wasted on pure frictional forces and more is put into acceleration.
This is the MAJOR reason that evo's nearly always go faster than vr4s. VR4's are like a brick hitting the air whereas evo's are far more streamlined.
You will also have to contend with the liveaxle rear in the borg. Best of luck with that issue, I have no idea how to tackle it.
EDIT: Above is in layman's terms. I can explain this using algebra if you like.
