[cmax87v3500]

ya, JPalmer81, all my dad did, who built that white crew cab that you were asking about, was cut the risers they come with down to certain measurements, then weld on some flat bar so you could mount it to the factory holes. the new style risers are wider so the flat bar corrects for that. i have never been around a 60/40 mounted in, but i know thats how he did it with the bench's hes put in. thats ho were doing my new one. funny thing is, since your doing a crew, the front and rear bench seats are the same, like exactly, except the rear dosent have the console, just an armrest. that what i have. all gm did was take the adjustment hanlde off the rear seat, and put a set screw into the adjustment setup underneath so it couldnt move haha. but in my case the big brace for the passenger side of the arm res hit my amp, so its a big mess of a fab job trying to get it all to work right again lol o well makes it interesting ha