the spacer looks like 3/64? and is used on the 5.7 and the 4.7-----a friend has done 4 of these into older mopars and has bought these off ebay i believe----i grabbed a junkyard one for him and he announced he got a torque converter that was made to delete the need for that spacer....someone here must be up on it......mopar part number 53032454AA.