Retro mountain bikes

As a rough guide, what sort of frame size would a 6’3” person want to be looking at for a rigid 90s 26er?
Might build a mate up something and I’ve seen a nice frame that’s apparently 58cm too tube x 57cm seat tube.

I'm 187cm and my Klein Attitude is a 22":

And here's a modern bike for reference (both of these have the saddle at the correct height for me, other controls in the right place etc):