I have a 1990 Si Hatch with the standard disc brakes, 9.5" fronts and 9.4" rears.. I can get 1997 ACURA INTEGRA GSR front and rear brakes from someone who is parting out.. I think they are the 11.1" fronts. I checked the thread https://honda-tech.com/zerothread/1811368 but I don't see where it covers the 88-91 models.. The person selling them says that they will bolt right up, no mods. But will they? What about the wheel bolt pattern? and the splines on the drive axle, I have a 94 Del Sol DOHC VTEC engine with LS Integra Tranny...

 

https://honda-tech.com/zero...age=1

https://honda-tech.com/zerothread/2103161

97 spindles will not work in the front. 97 rear disc will work in the rear

http://fourthgenhatch.net/howto.html