nah, all is dead easy on cis-e.
let's assume it 'was' running before the tree.
to resurrect it, is simple.
first, get access to the engine bay and cabin. use a sawzall and cut the a pillars.
the hardtop will lift out with the undoing of the locks on the side and the rear lock crank... you should be able to get it off easy.
get a battery with good charge - din88 size
pull the crank angle sensor cable from the EZL unit on the wheelarch (green coax plug on the EZL)
fit the battery.
drain the coolant at the radiator, if it looks suss. otherwise wait until the engine has been started and run - then change it.
get the car up on the hoist, drain the fuel from the tank, remove the plastic cover from the fuel pumps, remove the filter. You will be needing all this anyway, so replace the filter now before putting a small amount of clean fuel in the tank.
pull the plug leads off the plugs - use a proper pair of plug pliers and remove them at the insulator, do not pull the rubber boot or the silicon sleeve on the wire - this is a sure fire way to root a set of leads and they cost nearly 300 bucks to replace with the correct ones.
Theyre Beru, so you can remake them, but if you take care of them they should be fine.
pull the plugs, look at them and see if they look OK.
drop your marvel oil / atf in the bores. key in ignition, crank it over.
it should turn real freely and you should see the oil pressure in the gauge come up real quick.
if it does, you're 90% there....
refit the plugs, leads, refit the crank angle sensor plug to the EZL.
make sure there is good fuel in the tank.
crack the inlet nut fuel line on the fuel divider. turn the ignition to position #2
several times. You should hear the pumps prime and stop. as soon as they stop turn the ignition off and on again, until the pumps stop priming. this gets the clean fuel up to the divider.
turn the ignition off. tighten the inlet connection at the fuel divider. notice there is a little brass adapter there... thats a filter. you should replace this (later) when you have established the car runs.
now, crack each of the nuts on the top of the fuel divider... just crack them open, and repeat the 'priming sequence' I just mentioned.
have a look on the top of the divider. if there is clean fuel, tighten the nuts. if there is gunk, slacken the nuts a little more and prime a few more times, then tighten all the nuts again.
now you're ready to fire it up.
1. you should have oil pressure already established
2. you have fuel established
3. you should get spark, providing the crank sensor is plugged into the EZL.
crank the car over. it should catch pretty quick and settle into a good idle after it clears all the oil out of the cylinders. get the idle speed up a bit asap - around 2K. vary it up and down until the engine warms up, then let it idle for a bit.
go looking for coolant leaks, make sure the header tank is holding pressure. get the engine real hot by giving it some elevated RPM's until you see the temp gauge climb nice and warm.
when you are satisfied it's running OK, then turn it off, let it cool and come back in the morning when it is stone cold and start it. It should catch immediately with no touching anything other than the key.
then you're ready for the transplant!