Only the GSX-R750 Slingshot models ('88 - '91) have the clutch operation on the right side of the engine, so they have an undrilled shaft.
All the others have a hole in the shaft.
It does not take long to reach 50 useful posts.
Get reading and join some discussions, you will probably enjoy it and learn something.
If you're too lazy to do that... spend your few grand elsewhere.
Baboon arse Teapot is how we call them here
No EFI but carbs. With the bike in gear and sidestand down the starter should not turn. Clutch always needs to be pulled for starting. That's how it is from the factory.
The ignition switch has a 100 ohm resistor built in to prevent hotwiring. If it has been running fine with the toggle switch, it means PO has installed a 100 ohm resistor somewhere. Maybe that has come loose/disconnected somehow.
EDIT orange/yellow wire from CDI/ICU should be connected to ground through a 100 ohm resistor. More here.