You will have quite a problem with the swing axle rear suspension.

I haven't a clue whether anyone deals with these suspensions anymore (from a modification standpoint - plenty of people repairing them). Other cars have re-arced front spindles and redesigned rear control arms. We handle such conditions on BMWs and Nissans ZXs by ovaling the inner control arm attaching hole then adding large washers and longer bolt. After moving the assembly during alignment we then MIG weld the washers to the frame establishing the new pivot point.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician