the skyline is almost standard and the civic is a 600+@wheels monster...
I ve seen many vids with civcs killing skylines, supras, vipers etc...

B18Cs are one of the most tunable engines in the world. Usually civics and japs in general of this level use huge turbos (T76s etc) with quite high comp ratios (of over 9:1) and over a certain boost level they use race gas...

In greece we have a couple of civics with over 500 wheel power... Typical setup is crower rods, je pistons, tubular manifold, ext. wastegate, Big turbos (greddy, turbonetics etc.), SDS electronics, Greddy or OEM managements, 1000cc injectors, twin fuel pumps, etc etc...