Does the 91 civic hb si come with rear disc brake or drum, or is it only crx si that come with rear disc brake???

 

Factory was only the 90-91 CR-X si. Now you can make any rear discs work on any 88-91 civic/cr-x. Just need the parts, rear trailing arms, calipers, e-brake cables, and brake lines. Can use the 90-91 CR-X Si, or 90-01 Integra, or 92-00 Civics. e-brake cables I would suggest 90-93 teg 2 doors though