the 94-97 2door seats sits lower than the 98-01 integra four and two door and i believe all integra seats sit lower that civic seats, i know because my 94 integra seat sits lower than my wifes 01 integra(correct me if i am wrong)
I have ek seats in my EJ8 and I hate riding that high I wish I could just install the 92-95 prelude seats. The prelude seats are so much lower and comfy. On topic though I think other seat seats lower than a stock ek or si seat.
I have Integra GSR leather seats in my '96 Sedan. I swapped the rails from my civic seats onto my GSR seats. They don't sit lower at all, maybe even a bit higher.