This chapter shall not apply in the case of wills, living trusts, deeds or contracts of insurance wherein provision has been made for distribution of property different from the provisions of this chapter or wherein provision is made for a presumption as to the order of survivorship if there is no sufficient evidence that the persons died otherwise than simultaneously, in which event full effect shall be given to the presumption so provided as to the order of survivorship.
Ala. Code § 43-7-7 (1975)