Converting a LS small spline to Big spline

[91HBCivic]

So i was wondering if you could take a small spline Ls and convert it to big spline, im picking up a 99-00 b16 tranny and wanting to swap gears into it, I've been searching and searching and no luck anywhere, is it even possible?

 

[INJEN78]

id imagine you could just swap the input shaft but idk