Cool. That ST-10 is a great tranny but be carefull coming out of the hole. Had the same tranny in my '57 chevy back in the '80's. Side stepped the clutch at about 3000rpm IIRC and cleaned the teeth off 1st gear cluster. To achieve that low 3.42 (thought mine was 3.44?? must have been 3.42)the gear on the cluster is REALLY small. Not alot of mateing surface there. Still a WAY better tranny than a close ratio anything. You'll LOVE it.