Is my frame bent? S. Florida frame shops?

i've been furiously trying to solve my 2001 GT ride height issue for the last several weeks.

the back right of the car sits 1/2" higher than the other corners.

when the car is in the air, the back right tire hangs lower than the other 3. when the car is on jackstands, supported by the frame rails, the back right corner doesn't touch the stand. i replaced the rear eibach sportline springs without any change.

can you recommend a frame shop in south florida? i don't know what to do, but i've heard it's an expensive problem.

everything on the car seems to line up perfectly.

however, i have noticed that the doors do not open well when the car is lifted on jacks - i assume that goes for all cars.

i don't have subframe connectors. do you think i should get some welded in to straighten out things?