[shortstep60]

There is no stock position for a bbc in 1964 trucks they all had sbc or inline 6 motors. I have a 1965 that I am building in my shop with a 502 bbc in it with the tall valve covers. I did not have to put one dent in the fire wall it fits nice. I would do what captainfab says put a clutch slave cylinder on it and a clutch hydraulic throwout bearing on your truck. I used speedway motors 910-25610 clutch hydraulic throw out bearing works good.