Well, my mother had a red skyline, very similar to the one in your avatar. I recently purchased the identical car (except her is GXE and mine is SXE) and from memory it's an R30 .. I may be wrong, could it be an HR29 or DR29 ? I don't know enough about Skylines to know the answer myself. They have an RB30, both have air-con, both have square box-shaped boot, twin circular tail lights, just like every other Skyline of it's model, and there's plenty of them around -- I see them all the time.