I have a 61 chevy pickup, i put a small block chevy engine in it and a 700r4 trans. left the original rear end and i have a problem, i don't have a drive shaft that fits it. No good. i have the original driveshaft, too long and one out of a 86 chevy truck, too long. does anyone know of a driveshaft i can get out of another car or do i have to get this one cut and balanced? Thanks in advance.