well it has the later bulkhead with the complete drip rail small dash vents and speedo trip. also no factory fog light, centre switch panel fitted with hazards. looks like it had a full canvas at some point im no expert but id like to have a stab at 1978 to 1980.
looks like it could be ex military, with a strange rear cross member or is there something i dont know, looks like military ends with civilian centre 
Back body looks to have had the 1983 light arrangement at some point, antiburst door locks were also found on the late military stuff. I'd say certainly some of the body is from a late 109 CL spec.