Even with less than 90 hp, I can feel the need for an LSD when I'm autocrossing. Its not essential, but it would really make an improvement. Plus it will make you look cool, not being a mad tire squealer out there like most civics are. I plan to get an LSD when I do my swap (doesn't change my class--the swap would put me in SM anyway) Plus its safer for normal daily driving too. I say go for it.:thumbup: