1973 Duster Need Lots Of Help

dont you mean a 225 slant 6?, the slant six i find you can not kill them, my grandpa had the largest chrysler dodge dealership in the north west and he of all things drove a 68 dodge dart with the 225 slant 6, he drove that thing from spring til fall from 1968 through 1978 when he sold the dealership, that things odometer must have zeroed out at least 4-5 times, so they are a dependable engine