will they fit into a 88 civc hatch dx?? can i mess with the rails they come with or just drill hole or weld them into the car?

 

i have no experience in putting those seats into that car, but simple measurements can tell you exactly what you need to know

 

i have ls seats in mine right now and was planing on getting the si seats

 

1988/1989 have different tracks than the 1990/1991.
The earlier years have the seat belt mounted to the pillar, that later have them mounted to the doors. And the seats themselves are different because of this. But Dx/Si/Std in the same year are interchangeable.