In fact, CF-TJE (c/n 45565/111) was originally a DC-8-42 and carried the Air Canada Fleet No.805. She was delivered on 17 Nov 1960.
The aircraft was later converted to DC-8-43 standard. As far as I can gather this resulted in an increase in take off weight from 312,000 lbs to 318,000 lbs.
Just in case you have not realised it, the DC-8-40 series aircraft were powered by RR Conway 12/509 engines and not the usual P&W JT-4A/JT-3D engines.
Can I take my anorak off now?