Does a frame of 69 Chevy pick up fit 89 pickup?

No, a 1969 Chevy pickup frame will not fit a 1989 Chevy pickup. The frames are completely different designs and dimensions. The 1989 truck is significantly larger and heavier, and uses a different suspension setup. Even if you could *theoretically* force some parts to align, it would be an incredibly complex and impractical project with significant engineering challenges.