I just wait until late and truck it down to the car wash,dose it with oven cleaner and pressure wash it clean.they don't even call the cops anymore.
As long as you have a driveline yoke in the tailshaft housing and go kind of easy around anyplace a shaft goes into or out of the gearbox,it'll be okay.You can even wax it so it won't grow any more rust for a while.
Speed


1954 GMC 350
1957 GMC 1/2 ton
1962 Chevy C-30
1952 Chevy 6400 dump bed project truck
'98 Harley FLSTC
'66 Pontiac Catalina
'76 Chevy 1 ton Duallie
'84 Bronco II
'78 Dodge W-200
'81 Toyota 4X4 truck