im trying to put a new engine in my civic 4dr and was wondering if anyone knows if a honda b20 longblock will fit in a 2003 honda civic lx? will the tranny i currently have work with this engine? i need to know.. like asap haha any help will be nice!

 

Will it fit? Sure, if you've got enough money, time, and know-how.

Will your stock transmission work with it? No.

Read this..
https://honda-tech.com/forums/honda-civic-2001-2005-78/faqs-guidelines-read-before-posting-2101211/

 

It should fit I suppose just need to have someone to help