a GM V8
Yes it is and its the easyest to do.
locate a LX-i engine for it
yes you can its a straight swap you don't even have to change engine mounts
no the whole top end is different ,and if your buying the injection stuff new ,it would be cheaper to do a engine swap.
It would help to know what engine you're trying to swap in. Quite a difference between trying to swap in a newer engine of the same model and trying to swap in, say, a Chevy small block.
Nothing, go buy a Chevy and put a Corvette engine in it.
It's possible to swap in a B20 series motor from a 3rd gen Prelude to a 5th gen Civic. However, it would be more practical (and easier to swap in) a D-series motor which there are multiple variants for the Civic between the late '80s into the '90s.
the best swap would be a JDM vtec 2.2 liter. you can get a 2.2 liter vtec out of something like a 2001 Honda prelude but you would have to do the wiring harness
Well its possible, but you might want to swap the engine for a b16 or b20. So you could actually drive the car.
I can't find the documentation, but the basic law is that the engine you swap in must be from a vehicle that is the same year or newer as the vehicle that you are installing the engine. So if you car is a 2000, you can swap in any engine from any car that is a 2000+ model, but any engine from 1999 or earlier is off limits. It's a good idea to have legit paperwork to prove the origin of the engine as well.
Vvl swap