Subframe conector replacement

assuming you can verify the car is level - I would go for the weight of car on it's wheels & tires... get four ramps and park the car on them - now you can still get under there and the car should sitting "right" - as in weight distributed the way it would be under normal conditions.. installing a roll cage before doing the subframe connectors is a great idea.. again, assuming you are sure the car is straight and level..