i've had both(well still have my rs2000)
prefer 2 dr's, always have, i loved my 4 dr,
but always wanted a 2dr realy,
i got as black 1979 rs2000, but i'm flat fronting it and cossying it(hopefully over the winter)
but my idealmk2 is, 2dr, white, forrest arches, 15"minilights, the proper old skool rally look