My son hurt his 904 transmission in his 1970 duster 360 powered drag car Sunday and I have a CRT 727 transmission and 727 converter sitting here. I know the driveshaft lengths are different but does anyone know what the lengths are for both set-ups. I have several driveshafts laying around from different dusters but didn't climb under it yet to take measurements. 8 3/4 rear-end.