it'll work better after sandblasting than after wire brushing, the metal is much cleaner, even better if you use their 'prep-step', or some other metal prep .... the quality of a paint job is always in the aurface preperation
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics