I got a ORC clutch assy and I'm not sure which the the clutch disc should face so I thought I'd get some help first. Here is what the disassembled clutch looks like:

For easy reference I've labelled the clutch disc 'side A' (shorter spline) and 'side B' (longer spline).


Here's what it looks like sitting on the flywheel:
Side A:

Side B:

Obviosuly I need to get this right the first go or the car won't get into gear meaning I'll have to pull it all apart again which I don't want do! So which is the correct way of installing this clutch?
Thanks for your help!