This is how I see this DC8
DC8 had many design flaws. Too thin, tiny engine turbines,. When I was a kid, my Dad was a 707 Captain. I used to fly with him or wander about in the airports, and a DC8 was like the other smaller 4 engines. Cause it was smaller in all aspects.

As it early retired for passenger use due to losing the battle to the 707, it got too cheap, so many freight companies bought it. But then the problem became evident. They couldnt load too much cargo with those cheap small engines.

So recently, I mean very recently, in the 80s...and that IS recently, since the DC8 passenger days were in the 70s, anyway, in the 80s, when big round engines were already available in airbuses, 767s and other wide bodies, they fitted the DC8 with these so it could fly properly.

707s were also used in a few freight companies, but they never needed to switch the original engines for better ones.

Im sorry, I dont see any praise in that picture. I see a badly designed plane with different engines, bigger, so it could be somewhat used in the cargo industry. I pass.