eyeball it to see if your car is now staight your nuts never mind every other axis it can twist on but as long as you have your eyeball level on you should make sure the ground is perfectly level too but dont worry you can do that by eye too just squat lower
no wonder modified car are getting pulled for mto
if you realy want to get it fixed because you have a hard on for the car take it to a body guy who has a frame staightener and let him do it right but for the price like everyone else with half a brain said you now have a great parts car because it should be cheaper to get a new chassis/car
how ever if the frame rail is not part of the prob and has not been affected by the prob carry on but maybe have your eyes checked first to make sure they are plumb.
have you experiance welding or will this be your first time?
and yes my spelling/grammer sucks i seem to have nothing better to do then post in your thread etc etc.
I mean no real insult to the original poster but dont think he should take the third post as the correct answere even if you decide the frame rail has not been bent twisted or cracked
Mael