Being fooled in 2008 with a garage/shop...we found this today !!
I've also had better luck with the 904 transmissions, Currently I have one behind a 360 stroked to 416 that makes 625 at the flexplate. I run only 1/8th mile with 5.13 gears, a 29.5 x 10.5 tire, it shifts @ 6200 RPM.