What other K series motors can I put in my 2011 Honda Fit besides the K24z3 the only one I can find in my area has a bad bottom end

 

an old k is a k. They all have pros and cons.

I don’t believe anyone has really messed much with post-2014 or so K-series stuff with integrated manifolds, avoid those.

If this is the question that is tripping you up you are probably not ready to swap that engine into this car.