If considering 2016 Ford-model-year based Class C's or Axis/Vegas Class A's (built on E-Series stripped chassis), you may find these specs useful/interesting.
https://www.fleet.ford.com/truckbbas...Cutaway_SB.pdf
There is a lot of data listed for each model, including load capacities, spring rates, stabilizer bar sizes, tires, brakes, new 6R140 and older 5R110 transmission ratios, etc.
I found a couple of discrepancies which are probably typos, but in general it's got a lot of great detailed information for the technical types.
One item that caught my attention is how little difference there is between the E-350 and E-450 stripped chassis except for rear axle and springs. By comparison there appears to be more differences between the E-350 and E-450 Cutaway chassis.
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