correct it will fit. be sure to take lots of pictures before you pull all of the wires off. so you have a diagram of where they go after.
The biggest difference is the 74 has energy absorbing bumpers that the 73 is lacking.
between the rear wheels
Someone put one on it.
check jbugs.com
NO
Mine didn't have any.
1974 was the first year of energy absorbing Beetle bumpers. You can't use earlier bumpers on 1974s.
Machine 7 or Just aircooled
Call a locksmith he can make you one on the spot.
Replace the flasher relay if the lights come on but do not flash.
J C Wwitney has manuals
They're pretty much all based on 165R-15.