possibly one late DL-440/T-6 had Hi-Ads ,look for pics of
Mon-Con 400,it may have been built late 67,or early 68.
Mon-Con C-415 did have Hi-Ads #701,blt about the same
time frame as #-400.
the last 2 T-6s were finished during 1/69,after the Alco Plant
was officially closed,they had Roller Bearing Type "A" switcher
trucks ,similar to trucks used since the late 30s on all but
Alco Switchers.NSS 1016,1017.
and 8 or so Baldwin switchers that used Standard Steel "Batz"
trucks.circa 1939-41.
Spikre