LMAO! WTF for sure.
There are a few ways to approach putting this motor into your car. One is going OBD1
conversion and use a jumper harness for an OBD2-OBD1 and have a OBD1 ECU. You say the
car is a 2000 so why do you need a conversion if you are using a 2000 LS ECU? I'm confused
on your post The other way I know is to convert everything on that motor to OBD2 (Dizzy/Al
/Injectors/Intake Man/ECU)
But my true opinion is this motor of yours with a 2000 civic is (at best) a spare bottom end with
some spare parts. The top end is okay and you could spend $$$ and have it ported/polished and
such but that's just not the 'smart' move to make. Putting this motor in your car will cost you at
least $700-800 bucks after you buy a transmission (at least $200 more if you want GSR trans),
Intake manifold, dizzy, alt, axles, ECU, shift linkage, mounts and other misc parts. Then you add
the cost for new timing belt, water pump, maybe oil pump, cam seals, dizzy cap/rotor, spark
plugs, etc etc. (and I think it is pretty inexperienced to think you can gamble on those parts being
'okay') That adds to around $250 maybe a little more.
Or you can buy an OBD2 B18B and throw it straight into your car....later turbo it and have an
extra bottom end...and head. But if spending a minimum $1000 to convert this into your car
seems too excessive for you and your current motor set up (like 'if it ain't broke, don't try to fix
it') I would come up with a new plan. I don't know how comfortable you are with these
mechanical conversions and this could become a big headache.