differnce between 1966 904 trans and 1967

I have a Dynamic 3000 stall converter with less than 200 miles on it i pulled out of my 65 barracuda. When I swapped out the old 273 and put in a 360 I had to have a converter made to still use the old 904 tranny. It has the 18 spline and 1.810 register. i decided to go 4spd. manual in the end. I paid 500.00 for and would like 350.00 if interested. Call me anyone interested. 717-701-2208 in Pa.