Since when was 400hp needed to scoot less than 2700lbs down the 1/4 in around 12 seconds? First of all I'd be worrying more about the torque than the horsepower. Apply basic physics, insert the optimal gear ratioes, consider the drag coefficiency of your airflow, factor down the friction coefficient of soft-rubber treads and 4-ply sidewalls, then slap yourself silly for even considering it impossible.