Looking for a seal for the front block dipstick tube receptacle in my 392. Trucks used the front receptacle. Scouts used one in the oil pan. Therefore I need to plug the hole. My engine had no seal. One of our awesome lightline vendors offered to send me one from a used block but I’d rather avoid putting him through the trouble if I can. Came across this gadget. Designed for a GM LS. Anyone know if the diameter will work? Can’t measure an IH dipstick at the moment. Nor do I know the diameter of an LS dipstick tube.