In my 93, WT back when, I bought a set of $1800 custom seats. They were a 40-20-40 seat. I dont remember drilling holes for them, but Im not sure. It was a very long time ago. I ended up swapping them for a set of seats from an extended cab, plus the guy gave me $900 for mine. Those seats fit the floor, but I did have to drill holes in the floor on the trans tunnel side. In my 97 Silverado, I had 60-40 seats. The drivers side seat bottom materal was worn and the foam was falling apart little by little. I found a nice set of Tahoe bucket seats at a swap meet. Same fabric as my OE seats. It was the easiest seat swap I have ever done. When I took out the 60-40 seat, there was a bolt that lined up with the rear hole for the seat bracket next to the trans tunnel, and the other 2 holes in the door side also lined up. The drivers side is power, with power lumbar. My OE seats had power lumbar, but were not power. After unplugging the connectors from the OE seats, and installing the Tahoe buckets, everything worked. The bolt holes lined up, so only the front bolt hole, had no hole in the floor next to the trans tunnel. I never bothered to drill that hole, so I have 3 bolts per seat. Its fine like that. I also recently installed a set of bucket seats out of a Kia REO in my sons 2010 Tacoma. I could only use 1 OE hole per seat. I had to drill the other 3. If you need to drill holes in the floor to mount your seats, keep in mind that the metal is only sheet metal, and you will need to add a very large washer to sure up this sheet metal. I cut out a washer from some 1/8 metal. The washer I cut out was about 2 inches wide, and 3 inches long. I drilled a 1/2 hole in the center of that washer. The holes I drilled in the floor, were through holes. I put the bolt in from the bottom, and the nut in on top of the bracket. I found it was easier this way. As for a heat shield, I dont remember fooling with one, but I may have, IDK.
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