Greetings Reed: Good to hear you're back in the saddle with this very  interesting project. Looks like you are off to a good start. I would like to make a couple comments and I'm sure other folks will add to this who have dome an "A" retro similar to yours, I have not.  If you plan on using the trans pictured remember the Y-block truck trans has a larger and longer input shaft. Like 7" long requiring  a y-block truck bell housing for the small bolt pattern trans. At the moment, there is one on flea-bay. Not mine nor do I know the seller. Just mentioning this as these don't come up too often for the small bolt pattern trans. Also, the banjo axle is not very strong, especially behind a strong V8 and working around all the drive shaft issues will be difficult. Someone experienced with this axle will be able to shed much more light on it than I.  It would be helpful to state your aprox. location as these parts will be very expensive to ship. I have most all the 3 speed items from my 64 F100 when I installed a T-5. Very lightly used 11" clutch, to name one item, but it's in Michigan.  Please post updates when you can, hope this helps, JEFF...........