The LQ4, LQ9, LM7, L33, LS1 etc etc are all the exact same size, not in cylinder displacement but the engine itself.

The intake manifold and exhaust change other aspects of the size.

The LQ9 is just a better LQ4.


S10 swaps are great, a bazillon threads with pictures and info on the swaps. Running no a/c can make it quicker/easier swap and of course the oil pan and stuff needs to be swapped for like a H3 pan or something similar.