i have an si hatch and am swapping very soon. my motor is pulled and im cleaning and prepping. i am also doing the suspension. my setup is koni reds-hyperflex poly bushing kit-progress camber kit- susp. technics sway bars-and neuspeed race springs. now the question----i am putting a b18c1 in and need to know if there is a big enough weight difference to need stiffer front springs or not. let me know. thanks

 

it's better to get the springs with the greater spring rate in the front. Most people with civics get Integra springs anyways.

 

ttt anyone with numbers of weight difference?

 

I hear it's about 75 pounds...
but don't bet the farm on that.