Differences in 904's

Hey guys Im gettin' ready to buy the Torque converter for my 360 / 904 combo. Im aware of the wieght situation for the 360. But I was given some specs as to whether I was going after the correct converter. My question is, are all of the 904's the same as far as splines and shaft sizes, and all that stuff?
Im going after a stock converter for the moment so here is the specs I got from the local parts house!

Non lock up, 904, 11" diameter, 27 splines, 1.81" pilot, slotted hub, 4 lug mount, ring gear (122 teeth) 2 rectangular weights, and 9.96" bolt circle.

My set up is a 73' 360 and a 74' 904. :scratch: