72 Dart Torsion bar replacements??

Okay, I have my bars ordered. Since I'm a cheapo, is there a way to install these and adjust them to the correct height without spending another $100+ at an alignment shop?
I'm sure its some thing like, install, bounce the car, check adjustment, drive for so many miles and adjust again?
I appreciate the help!

In theory if your current ride height is where you wanted it and you knew your current alignment was good you could just measure from the ground to a spot on the k-frame or fender and adjust to that point with the new bars. When was the last time it was aligned, and what kind of specs did you go for?