4 wheel drive class c

j-d wrote:
But not if the vehicle's an E450 with that lousy driveshaft parking brake...

I thought my E450 had a driveshaft parking brake, too.

Now I'm not so sure ... see the parking brake line item on page 13 of this E-Series spec - it uses a transmission mounted drum, which sounds superior to a driveshaft based parking brake: https://www.fleet.ford.com/truckBBAS/non-html/2005/vs_pdf/05e-seriesvanbb.pdf