To install on single player, open openIV, and navigate to:

mods/update/x64/dlcpacks/mpsmuggler/dlc.rpf/common/data/handling.meta

(if that folder doesn't exist, you should look for tutorials on how to create the mods folder properly! Sorry I don't have time to type a life story on something that has been explained much better everywhere else! :D)

Once you've found that, open up handling.meta, and locate the microlight lines and replace the values!

Once done, start GTA V, wait 1-2 years for the game to start up, and find a way to spawn the microlight!

According to the GTA Fandom, it can be found:
(if not found, remove above line)


Enjoy a more realistic handling experience! - If you're reading this, the handling has been updated to handle the implementation for crosswinds.  Which I figured out how to get working! <3 I'll keep you posted on what we're going to do with it!
Cheers!


As always, more stuff coming soon! :)
