As for the step bars, friend did just that, bought some cheap ones and we are in Michigan and they turned to rust in less than a year. In 3 yrs he had to replace one of them because they rusted out from the inside even though he kept after them cleaning and polishing etc. Had to drive 300 miles (to Chicago area) to find a reg cab wt, he ordered one and dealer never got it and with winter approaching (plow truck) he needed fo find one ASAP. Furd dealer found him one but he choose to drive to get a GMC.
Just what you can expect with cheap stuff, LOW quality.