Thanks, I learned a bit from the other fork post that oz had. There are 4 total K0's in the shop.
This began when I was working on #3 and I noticed 5511 had stepped forks, 43,000 + had stepped forks, but 14,100 had tapered. A swap may be appropriate, but I have an even newer 1971 K0 frame and engine, those tapered forks would be more appropriate on it. That's the transition bike they might have come on.
I do have a proper set of early fork lowers that are in rough shape, but I've cleaned up worse and have the old rusty top tubes with most of the parts and have a couple more tapered forks just in case I need parts.
There's a good chance I swapped those forks onto there because it was my first 750 since I was younger and I just wanted it rideable.
I am hoping to own all three K0 colors, I got a gold tank set from Mark B on here.