Andy, do you know someone who has an outside lift?....like maybe a big truck washing place? or someone else?
Since its a truck, and not that hard to get off the frame you may want to rethinnk this....just a suggestion...but if you could get it on a lift and pressure wash it, or even better steam clean it, let it dry good and then a coat of POR15 I'd think it'd last longer than any of us here. (yes, I like POR15)
...or do one 12 inch square a day.....15 minutes a day will work wonders in months time and keeps you motivated.
let us know how you proceed.
