on my 63 Plymouth from the mounting face of the front little crossmember that the hanger bolts to is 2" to C/L of bolt and 2.5" from floor down to C/L of bolt

67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials