I ride an old 17" Stumperjumper right now but was thinking about buying a used 16" Kula that someone is selling online. My only worry is that it would be too small. I'm 5'11" with a 32" inseam. Any thoughts or suggestions?

At your height I don't think you want a 16 inch frame. Go to Kona.dk and look at the geometry, most kulas are about the same throughout the years. Im your same height and ride a 19 inch kula, and would never go below 18 for a xc frame.

I'm about the same size as you, and I think the 16" would be too small. You should stick too 17-18" frame.

I ride an old 17" Stumperjumper right now but was thinking about buying a used 16" Kula that someone is selling online. My only worry is that it would be too small. I'm 5'11" with a 32" inseam. Any thoughts or suggestions?
Definitely a 16" will be too small. I'm a little over 5'7" and I ride 18" Konas.