Here's the deal. I will be running a 97 JDM type-R with a 90-91 LSD Y1 transmission. I am in the process of purchasing a 92-93 integra ACT clutch disk, which I will be using with the stock type-R pressure plate.
I have the choice between 2 ACT disks. One has 50% more clamping power, the other has 100%. There is quite a big price difference between them.

The stock integra 92-93 motor has 140 HP so 50% increase should be good up to 210, which would be alright, but since I'm using the stock type-R pressure plate, this should be plenty. This is not a race car, it will be a daily driver.

I need some advice.

 

You need a 90-91 clutch disc. You cann't use a 92+ clutch disc. The pressure plate is the same but the discs are different.

 

What is different? I'll be using the type-R pressure plate, so it'll be fine. I just need it to fit on the shaft from the Y1 tranny, which it should since they are both cable transmissions.

 

Anyone else can confirm? 90-91 or 92-93 integra clutch disk?

 

Use the 90-91, I heard the splines are different then the 92-93...

 

yes you need a 90-91 , y1 and s1 use 90-91 disk