Sorry but here goes a supporting thread jack....
I'm installing my ES master bushing kit so I was gonna go ahead and finally install my rear discs at the same time. I had everything except the proportioning valve so I went to a local junk yard the other day and there were no 94+ Integras with the 4040 prop valve. There were plenty of 87,88, & 89 Integras that had a 3540 prop valve so I went ahead and snatched one figuring it's got to be better then my 3030.
Does anyone know if the 3540 will work for now until I get my hands on a 4040... I mean it should since it came from a 4 disc setup.