Well, whatever that is, I'm unable to read it. But then, if it's on the internet it MUST be true, right? The SDP40F units were NOT "top heavy", as the additional boiler water supply tank was mounted directly on the underframe, inside the carbody. When both the lower fuel & water tank plus the inside the carbody water tank were filled with water, the units total weight was close to 400,000 pounds, thus only certain railroads allowed Amtrak to utilize the carbody mounted water tank (there were supply valves, which were sealed, that would be opened for use on those railroads allowing the extra weight).
The bottom line was, you can't operate a heavy, i.e. over 395,000 pound locomotive, no mater whether freight or passenger, over crappy track, at passenger train speeds.
