Need help with idler arm ID

Actually both idler arms fit the 1974 Abodies. Casting number 3402844 is the factory original idler arm. Moog made two idler arms in the 1970's.The standard design which looks like the original Chrysler idler arm and a high performance idler arm which looks like your "crooked" idler arm, part number K7086. The Moog standard design arm was discontinued many years ago and the high performance one is still being produced.