I just done a swap. I had the 5.0 engine and it still cost me $1500 in parts. A donor car is the best way to go about it. The following parts were different in my 93 lx swap.
Motor mounts
Starter
Battery Cables
All brackets
A/C compressor and lines
Coil
Engine computer
Main harness
Engine harness
O2 harness
Front electrical harness can be altered to work
Fuel lines from filter to engine compartment
Cruise control unit
throttle cable
All vacuum lines
H pipe
Crossmember
Cat backs
All exhaust hangers
Rear brake lines
Auto transmission
engine plate
flex plate
torque convertor
shifter
shifter cable
driveshaft
air intake
Fan - 4 cyclinder electric fan is too tight to use
fan thermostat
All cooling hoses
fan belt
speedometer
The 4 cyclinder car has no air pump or related parts will need with the 5.0 to pass emissions testing
I sure I missed a few parts. I started mine three weeks ago and a few odds and ends this weekend, it will be on the road. The engine started right up after the swap with no problems.