Yep, that's it.

On another note the 84 Ford Diesel I used to have had that "box of springs" (it wasn't in a box) on the right side just under the vents in front of the windshield (which allowed in leaves etc). Really good design which allowed for some good fires that were hard to put out. Yes, those things can get pretty hot.

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1985 300D Turbo ~225k
2000 F350 (Powerstroke) 4X4, SWB, CC, SRW, 6spd ~148k
1999 International 4900, DT466e (250hp/660 ft/lbs), Allison MD3060 ~73k