[Ironhorse]

When I converted my '71 K10 from the sm465 4spd to 350TH auto I needed the flywheel cover. Doing a bit of research I found that the correct cover would be just the sheet metal or plastic cover with no support rods. The support rods/aluminum covers came along later in the square body trucks. Not sure what year, had an '82 Suburban 4wd that had that setuup. Hope that helps.