[masraum]

No, There are two things that will through you off here.

If you set the angle of the spring plates the same and then set the car down the new torsion bars (if they are larger than stock) will require new spring plate angles, otherwise the car will sit higher.

Even more importantly, if you spend lots of time making all four corners set exactly the same (per axle) you can have the weights very off. Kind of like if you take a 4 legged table and saw 1 inch off of two opposite corner legs. The table should balance and be level, but the two legs will be supporting all of the weight, the same principal will hold true for your car. Anytime you alter the spline settings of the torsion bars you potentially change the corner balance. There is a chance that you get things exactly right, but that chance is not very good.