23 or 18 spline?

So do you have a recommendation on clutch and PP to go with?
I’m running the Ram 98766 kit behind my 400hp 340, 3.91 25” tire with no issues, but I’m not drag racing nor dead hooking the car all the time. Most of the time when I roast them I over rev and side step the clutch in 1st and floor through the rest of the gears.