I know yu have t get an adapter to do that swap and there is a guy I talked to a few years back that was building an adapter a couple years ag to put eaton fullers behind a big blck chevy for a custmer.
The name of the place is Wilcap.I went there one day to get an adapt. to put a chevy th400 behind my 354 chrysler hemi and seen a 13spd sitting there and asked what he was ding with it.His reply was I build adapt for anything you want,a cust wanted one for that setup so thats what he did.
I think the site is
www.wilcap.com if that doesn't work type wilcap in a search engine.It will come up for flathead ford aftermaket parts and engine/tranny adapt.