Question time...Patricks kit (shifter conversion) for a saginaw 4 speed into my 54 Chevrolet truck with 55 driveline (open driveshaft). The incoming transmission (saginaw 4 speed) has 27 teeth on the rear spline, where the old 3 speed had 16 larger teeth. Where can I find the correct driveshaft yolk for the new transmission?

It also appears that the speedometer cable nipple needs to be quite a bit shorter, ideas?
Regards,
Will Dyer