Measure from ground to center of each wheel well arch (right at middle/center cap of wheel if that makes sense.
But double check front springs are clocked as mentioned and BOTH rear spring pig tails point towards the driver rear tire. perfectly straight with axle per say.
Past that these cars do not sit perfect from factory and bias a bit naturally. You have to get adjustable suspension pieces to dial in perfectly. If within 1/8-1/4 its about as close as it'll get. PLUS new springs will sit high for a week or two as the suspension settles with drive time.