If only toe can be adjusted, then it should be fairly easy to get that right without laser equipment. Maybe there is a difficulty getting the front wheels aligned with the rear wheel also that I'm missing. In my late 20s and 30s, I designed, built and raced tube frame formula cars. The suspensions were fully adjustable, front and rear, for caster, camber, toe, dive, squat, swing arm radius, bump steer, roll resistance, etc. We used string and protractor levels to accurately set all of these variables. I'm sure that I could perform the same on the spider using similar techniques. But if the computer has to be reset with a special tool after the alignment...all would be for naught. I need to learn a lot more about how the computer interfaces with the suspension on the Spyder. Where do I read up on that? I should add that it would take 2 or 3 of us HOURS to check and setup everything using that method. Change one thing and it would require adjusting many other things.