727 rebuild question

So in between homework and work I've been rebuilding my 727 transmission for my 74 duster, and I ran into a "stuck" point. When putting together the front clutch pack, the book says to use 4 clutches for a 360, but only 3 fit in there. Where I'm confused is that 3 came out of the front and 4 came out of the rear and 10 springs (which the table in the book doesn't have that combo).

Will 3 clutches be enough???

(First time rebuild....)

I'd add pictures....but I'll probably be one of the few engineers you'd meet that doesn't have a personal computer....haha!!