You talked me into it. 727 to a 904

I switched from a 727 to a 904. The car picked up 3 tenths. I used grinner valve body and the tranny was a 1974. I was told to use '72, '73, or '74 transmission. The only problem I had in 10 years is that I broke the oil pump cogs at the finish line which happens to 727 and 904's occasionally. the car weighs 3140 with me in it, motor makes 665 hp 575 torque car runs 9.80's - 9.90's.