Like Joe H. I got mine from Machils back around 1999 and it is still holding up very well. It's good quality and went together nicely. I would recommend having them to go ahead and weld on the stake pockets and angle strips if you decide to deal with them on the bed assembly. I also used stainless strips and bolts along with Oak wood. BAck then the entire kit including cross sills ect cost less than 1200 including shipping and back then I bought it through a vendor named Roberts Motor Parts. No telling what it is today but buying straight from Machils may help.
You may want to wait and see what Mar-K comes up with. I've heard nothing but good things about them. They also answered a recent inquiry the very next day.
Since buying a grille, and then having it chromed will only double your investment I recommend to go ahead and lay down the cash for a stainless grille. They are pricey but cheaper in the long run. Back then I got my grille from I&I Reproductions out of CAlifornia. I personally don't like I&I, their sales staff and other reasons. I would imagine most/all the grilles come from the same place now days.
Mine has held up well but maybe its because I bought mine before everything got REALLY cheaply made??

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