Ideas for extra Benchmade 484-1 Nakamura blade?

Earlier this year I bought a used Benchmade from a guy who had a custom engraving on his original blade, then sent it back for a non customized blade and Benchmade gave him back his original blade. I have been thinking about getting a cheap knockoff knife from ebay or Amazon and then replacing the blade with the extra I have, but I've not been able to find a model that looks the same as the Nakamura. I also thought about getting a Griptilian but the screw that holds the blade on the Nakamura is much smaller than the ones on the other Benchmade knives I have.

Does anyone have any suggestions or experience doing something like this?

You're assessment about fitment is exactly why I asked if anyone had any similar experience. I don't really have any other ideas. I can unscrew and screw something together, mostly without buggering up the screw heads, but I'm not skilled enough to make or fashion parts to create a new knife. The Griptilian is actually pretty close, other than the screw size. Even the Axis lock will lock up the blade tightly.

There's an image on the other side of "Lucky" the dog, who may, or may not, be with us anymore and could have led to the blade change out, but I didn't ask for the back story.

Yes it fits well in the Griptilian except the screw is too thin. It doesn't seem cost effective to buy a broken or damaged Nakamura so I may throw it on ebay and see what I get for it. BTW, the Nakamura is a nice smaller sized knife when you don't want to carry a larger one.