Engine hoist: https://amzn.to/2TBpgws
Jack stands: https://amzn.to/2JO5yOi
Jack: https://amzn.to/2Wv6mcy
Clutch alignment tool: https://amzn.to/2Wue866
breaker bar: https://amzn.to/2WvYCXJ She starts!!!

This is my DIY video of how to convert your 4 cylinder E36 to a 6 cylinder. Really can't explain how easy this is for a novice, it will take time but nearly every part is interchangeable.

Bound to have missed out some details so please feel free to ask any questions in the comments and I will get back to you.

Before I get into this a few points:
If possible buy a donor car, so much easier
I am not a mechanic just a hobbyist
This will work on E36 M4x to E36 M50/M52
Due to the modular design of the E36 this is a really straightforward swap.
Have patience and it can be done in a few weekends

Brief Summary of steps needed:

M44 Removal
• Jack the car up & disconnect the battery
• Drain all fluids: oil/coolant/power steering and AC
• Remove exhaust system & disconnect driveshaft from gearbox or diff
• Disconnect slave cylinder from gearbox (if manual)
• Remove front end of the car (optional)
• Remove bonnet (optional)
• Remove radiator and disconnect power steering lines from rack
• Remove AC lines if your car has it

Wiring
• Disconnect engine loom from chassis plug (big fat plug under battery tray)
• Disconnect fusebox live wire, relays from side of fusebox/Pull ECU out of bulkhead
• Disconnect grounds: 1 on each strut and 1 low down near engine mount
• Disconnect Coil pack from chassis
• Disconnect throttle cable

• Disconnect fuel lines
• Remove rear heater core hoses x3 (right at the back of engine by bulkhead)
• Connect hoist
• Disconnect gear linkage from chassis
• Undo x2 engine mounts from subframe
• Undo x2 gearbox mount from chassis cross member (4x if auto box)
• Pull engine

• Repeat above if needed for M50/M52 donor car

Putting M50 in
• Make sure you have a gearbox connected to engine
Fitment is the reversal of removal

Before starting M50/M52 up:
• Top up Oil
• Top up coolant and bleed
• Bypass EWS if applicable
• Turn the key

Tidy up jobs (optional)
• Swap 4 cylinder clocks for 6 cylinder. Only 2 screws. 4 cylinder clocks will turn on but will not read revs properly.
• Relocate the battery to the boot with the 6 cylinder relocation cable.

Thats it!