Unless you have lengthened the effective travel of both of the tie rods, I call bullshit. The position of the rack will only affect the placement of the tie rods and thus toe settings, it won't make your front wheels turn out at a sharper angle.
Look at www.battleversion.com and read how tie rods spacers work with a rack & pinion before you claim "drift style".
You can't exceed the physical stops on an E30 w/o surgery. However most racing happens at less than full lock. Engineers go to great pains in placing control arms, tie rod inner, and outer points, and design of the spindle to get some kind of dynamic stability in a suspension. Generally, moving the just the rack forward and backward changes the Ackerman effect (the toe change with steering input) and up and down movement of rack mounting changes toe setting in bump and rebound.
All is well and good until stuff starts moving. The car rolls around a roll center that is constantly changing as the car rolls. In addition, one side is in bump and the other in rebound.
If you're still not confused, throw in drift under opposite lock. The chassis rolls as if it's turning one way and the steering input says another. Then ask yourself what do I want to happen and why do I want it. Just a thought, but if I was drifting I'd pick the brains of some dirt track racers. They spend almost half the time in an opposite lock drift and run comparable lap times to asphalt cars on pavement.
That's why chassis engineers and designers make big bucks.
