Could anyone give me some advice on how to mount these 2000 Civic Ex sideskirts on my 1994 Civc Ex. What the modification I need to do make for them to fix correctly. Or any another way to mount them.

 

try searching, this has been covered

 

please LEARN HOW TO USE THE SEARCH FUNCTION

search "sideskirt" or "sideskirts" (you'll get different results when using plurals) click on archive topics & limit search to "eg+/del sol forum"

here is your answer BTW
https://honda-tech.com/zerothread?id=142946