hi i have rust problem on a 1984 pontiac firebird trans am 5.0 ho V8 the rust seems to on the floors and a bit on the bulk head and some on the inner wings and inner sills and battery tray but the chaisis its self seems alright but needs to strenthened im thinking of doing a full nut and bolt and a full body respray resteration on it what should i do about getting rid of the rust i will getting new floor plans thanks hope you help