I'm unsure on the FL4 stock spring rates, but I do know Spoon lists separate springs for FL1 turbo and FL4 hybrid but both list the same spring rates.
https://www.blackhawkjapan.com/products/spoon-51400-fl1-001?_pos=2&_sid=62e51777d&_ss=r...
For the past 3 years, I drove a 2019 Honda Civic Si Coupe that I put many modifications in. (Hybrid Racing short shifter, RV6 Type R retrofit clutch and flywheel, Acuity pedal relocator and shifter cable bushing, Greddy DDR catback, D2 lowering springs, PRL Cobra cold air intake, Type R rear...
I went to a dealer for the '22 Si because this dealer claimed that they did not do markups on the cars and were selling them for just window sticker.
They are claiming that the window sticker cost for the car is $32,000 which suspiciously is about the same as the usual $5000 markup I've seen...