TRE/PPG Dogbox build. Wrong input shaft 23 vs 20 splines?

[DeadlyAKrunna47]

I spent 2 stupid hours trying to put this transmission in. I found out it has a 23 spline input shaft! The original one is 20 spline. I can't find anything anywhere on people doing this? Think this was a mistake?
Here is the old 20 spline

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Then the new bigger 23spline

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Wtf?

 

[twicks69]

You need to use a Evo clutch disk.

 

[bastarddsm]

An evo has a 240mm clutch. He needs a disc from an rx7 if he is running a single disc.

 

[DeadlyAKrunna47]

I'm using a ACT twin disk. I destroyed the first disk because I didn't know.
I can't use an Evo twin disk because it's 7 bolt.

Wonder if I get 23 spline disks if that will fix everything? I can't find disks for ACT https://www.extremepsi.com/store/product.php?productid=28641&cat=1138&page=1

 

[twicks69]

With a single, you would use a Mazda RX-7 twin turbo disk. With an ACT twin disk you will need to contact them and see if they have a disk assembly with the 1"x23-spline hub (which I do not believe they do in the twins); they typically won't sell you individual parts for a twin disk either because that's just the way they are.

If you are just going to try doing it yourself, please measure the disk thickness of your disks, as well as the floater thickness (the plate between the two disks). That will give us an idea of what specific disks we need.