the only difference, structurally, between the 2-door and 4-door are the b-pillar and quater panel (essentially the uniside). the placement of the inner and outer structure for the b-pillar and the addition of the c-pillar on the 4-door and the overall shortened quarter panel due to the addition of the rear doors. there is no difference in the fron or rear of the cars. no difference in dimensions anywhere in the cars either. the only differences were in the 91-92 and 93-94 with the change in headlight/grille assembly, where i believe they altered the core support. though i may be wrong about the core support.