That trans is way cool!  It's been too many years but I kept looking at that pictured trans wondering why it looked familiar. Since it was mentioned it has a synchronized 1st, it's what I have known as the Ford 303 transmission. I believe 3.03" is the distance from the countershaft center to the main shaft center. An excellent very sturdy transmission that can take a lot of torque and abuse and has synchro 1st. Now I see why you are putting the effort into this project. Keep in mind for what it may be worth, the "303" trans was very popular with different ratios etc in the Ford line. From trucks, the big Galaxie's, Falcons and most everything inbetween but not with overdrive on the back end.  ,Good luck and as Miker stated:  Keep us informed...............



64F100 57FAIRLANE500

YEAH!  Some others were calling it a 3.03 but I just assumed they were talking about the first gear ratio...MY (limited) research suggested that the T150 had a 2.99 1st, 1.75 2nd, and 1.00 3rd...EXACTLY what my current trans has.
Thanks for providing the info on the significance of that 3.03 figure.  
I picked up a second shifter set-up and need to swing by the transmission guy's place so he can make sure everything works correctly.

My CURRENT setup has me at 3150 RPM at 65 MPH
This new one would be 2300 @ 65 MPH...2600 @ 75 MPH... in fact, that 3150 figure would get me to 90 MPH.  

I will report back...once there is something TO report.  Thanks to all.  

Well I finally have the transmission back and am trying to put together the list of stuff I'll need.  Looks like the bearing retainer is about that 1/4" larger than what I think my hole is going to be.

Miker- for someone who has never turned down a bearing retainer...can you dumb it down for me.  I'm assuming that it needs to come off via those 4 bolts...is everything going to crap out at me when I take those bolts out?  I assume I'll need to find someone with a lathe.  Any other tips?

My "peak to peak" measurement on my output shaft is 1.087" and it's 25 splines.  I found a 25 spline (25 -24 with one blind spot- so a missing tooth, I guess) that measures 1.113".  The diameter matches the ID on the seal.  Do we think that's our guy?  Wondering if 0.026" of "play" is acceptable.  What about that "dead" spline business? 

nothing is going to fall out.take the bellhousing with you to a machine shop and they will cut the retainer to fit.

Thanks Darrell.  
Just watched a video of someone removing the bearing retainer on a T10.  Makes more sense, now.