painting frame

what do you guys recommned for painting the frame? Its a truck frame, not for show but wanted to power wash, wire wheel and sand the frame while I have the cab/box(truck) off before I put the box/cab back on.

I was looking at rust bullet, but will explore other options. Just want something to last, if prepped right.

Thanks,

Resto Rick had some that others usedf here and reported good results. could be brushed or sprayed and regulare enamal hardner was used.

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Resto Rick had some that others usedf here and reported good results. could be brushed or sprayed and regulare enamal hardner was used.

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