I put in Bestop J**p replacement seats into my 40, and I'm real happy with 'em. I got the sliders from a 1970s era Suburban in a pic 'n pull yard. They work great. I just had to do a little grinding, drilling and bending on them to fit. After that I welded a couple of bars across them with holes for the mounting bolts, and srayed everything with black rattle can machine paint. I didn't want to alter the truck so they just bolt into the same place the original sliders did. I keep the old seats in the garage with the rest of the stuff that keeps me from parking my truck in there. I did a fair bit of research before I started, and a guy that had a bunch of seats for sale in his van conversion shop told me that almost all modern seats are 1" thicker on the bottom than Cruiser seats. This would have really be a problem for me as I'm 6'4". Bestop and some others have seat bottoms the same thickness as the OEM seats. I know other guys on this forum have gone to junkyards and gotten seats they're happy with. I'd like to know what junkyards they go to. I went to several and must have looked at a hundred cars. All the seats I saw were crap. Torn, stained rained on, etc.