Can a flush valve w/ a flapper be converted to a canister style valve?

We recently bought a new Kohler with a 1.28 gallon that has a canister valve (I think that's what it's called). We also have an older Kohler that has the flush valve with the flapper (see pic). We're wondering if this older toilet can be upgraded with the canister? Would only be interested if it's a relatively perfect fit and there won't likely be an issues.

I tired finding a video or tutorial but didn't see anything.

 

"Would only be interested if it's a relatively perfect fit and there won't likely be an issues."
Then don't do anything.

Why do you want to change the flush valve?

Kohler has made and still makes MANY different toilets. You essentially asked if "unknown flapper valve" will be a perfect fit for "unknown toilet". Yes, it will probably work or could be made to work. After all, it's a toilet, not rocket science.

Keep in mind that there are several different types of flush valves and most will fit. Each style works a bit differently. I doubt changing flush valve will improve anything but installing the wrong one or adjusting it incorrectly can cause a poor flush. Many older toilets don't work well with low volume canister flush valves intended for modern toilets. They usually will work... sorta but may require you to hold the lever down to get a good flush.