Depends on what you use your truck for. My blazer came with mid 90s tahoe seats, poorly mounted. While comfy, they had no bolstering. I adapted some early 2000 Suburu WRX seats in. Driver seat uses all original floor mounts while the passenger uses the front holes and new supports for the rear. I even saved the track sliders for the passenger seat, to use for rear seat entry.
Why? Cause my truck is 95% offroad minded. I need the bolstering, plus tilt back and ease of getting in and out. Something to think about.