took me a full day on my 4 poster @ 150psi to shot blast then glass blast the underside of my d2
looking into the dinotrol products as well
my concern with bead / glass blasting is doing any damage to electrics, considering the D3 has an extensive amount am looking into all options
think a rust converter being applied first but need to ensure that any loose or rust is removed first
so it's got a sound base for the paint to stick correctly and not just peel off
think in trying to use a wire brush would be a nightmare , but understand the inside of the chassis needs treating also due to it rusting inside out
the chassis is solid , has the rust marks from road salt has been remained on the chassis
maybe a small wire brush attachment might be one way of gettting it off