Me too. Remember that Ford 5 speeds have the bellhousing cast right into the tranny so you will be looking for a small block ZF. You will need to look in the F-250 and F-350, no F-150 had a ZF AFAIK
Mazda trannys have the intergrated bell housing too.
You could also look to the Mustangs with the 5.0 for a stickshift, might find a T5 set up.