1977 to 84 cad 75 series

Hey guys just keeping an eye out for a 77 to 84 4 door limo.. looking for a rust free beater.. Nothing to nice.. body and floor rust dosent bother me but i need a solid frame. Also open two a 6 door limo up two 90 or 91 but would prefer a 4 door. looking in the new england area but am open to a little travel for the right car.. I just want one for a beater daily driver... I am tired of my little fairmont lol Does not need to be pritty.. Would actualy prefer an ugly one LOL